fix(deps): update go dependencies (non-major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
go.opentelemetry.io/collector/pdata	v1.64.0 → v1.66.0
google.golang.org/protobuf	v1.36.11 → v1.36.12

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Release Notes

open-telemetry/opentelemetry-collector (go.opentelemetry.io/collector/pdata)

v1.66.0

🚩 Deprecations 🚩

• pkg/confighttp: Deprecate flat keepalive fields in client and server config in favor of the new keepalive section. (#​14020)
  The following client configuration fields are deprecated in favor of the keepalive section:
  • idle_conn_timeout -> keepalive::idle_conn_timeout
  • max_idle_conns -> keepalive::max_idle_conns
  • max_idle_conns_per_host -> keepalive::max_idle_conns_per_host
  • disable_keep_alives: true -> keepalive::enabled: false
    The following server configuration fields are deprecated in favor of the keepalive section:
  • idle_timeout -> keepalive::idle_timeout
  • keep_alives_enabled: false -> keepalive::enabled: false
    Deprecated fields set in the configuration keep working exactly as before and produce a
    deprecation warning when the client or server is created. Setting deprecated fields together
    with the new keepalive section is an error.
    Code migrating off the deprecated fields can use the new NewDefaultKeepaliveClientConfig
    and NewDefaultKeepaliveServerConfig functions to build a keepalive section with the
    default values.

💡 Enhancements 💡

• all: Bump go version in all go.mod to 1.26.0, drop support on 1.25.0 (#​15799)

• all: Declare windows/amd64 tier 1 and windows/arm64 tier 2 support (#​15786)

• pkg/confmap: Remove dead isStringyStructure helper (unused since (#​12793)
  This is an internal, unexported code path with no user-facing behavior change.

• pkg/exporterhelper: Cache the request size per sizer type so byte-sized batching no longer recomputes the serialized proto size of the whole accumulated batch on every consumed request. (#​12636)
  With sizer: bytes, the batcher's MinSize check called BytesSize(), which
  ignored the cached size and re-walked the entire batch's protobuf on every
  consumed request, making accumulation O(n^2) in the number of merged requests.
  The size is now cached separately for the bytes and items dimensions and
  maintained incrementally during merge/split, so the check is O(1). A single
  untyped cache could not be reused safely because the batcher and the queue may
  ask for different sizer types on the same request.

• processor/memory_limiter: Only report memory limiter component health status when the health state changes. (#​15751)

🧰 Bug fixes 🧰

• cmd/mdatagen: Allow underscores in feature gate IDs for compatibility with component names with underscores (#​15592)

• pkg/pprofile: add bounds checks to FromLocationIndices and switchDictionary (#​15697)
  FromLocationIndices now returns an error instead of panicking on an out-of-range or
  negative location index, mirroring FromAttributeIndices.
  The index checks used when merging profiles now also reject negative indices. These
  were previously reachable with a negative index decoded from an OTLP payload, which
  panicked the collector via Profiles.MergeTo.

• pkg/service: Route OpenTelemetry SDK-internal errors (e.g. failed metric/log/trace exports) through the collector's configured logger instead of the OTel SDK's default global error handler, which always printed to stderr via log.Print regardless of the configured log encoding. (#​12378)

v1.65.0

💡 Enhancements 💡

• pkg/exporterhelper: Add the pkg.exporterhelper.queueBatchEnabled feature gate (#​14038, #​13582, #​12022)
  When enabled, the batch settings returned by NewDefaultQueueConfig() have
  batch::enabled true. See migration RFC.

🧰 Bug fixes 🧰

• pkg/exporterhelper: Record otelcol_exporter_queue_batch_send_size and otelcol_exporter_queue_batch_send_size_bytes after batching, and add otelcol_exporter_enqueue_size and otelcol_exporter_enqueue_size_bytes for enqueue-time sizes. (#​14674)
  Previously the batch send size histograms were recorded at enqueue time (Offer), so they
  measured incoming request sizes rather than the post-batching request handed to the
  downstream sender. Those histograms are now recorded in the obs report sender.
  The previous enqueue-time measurements are preserved under the new
  otelcol_exporter_enqueue_size and otelcol_exporter_enqueue_size_bytes metrics for
  queue sizing. Users with the exporter batcher enabled will observe different values for
  otelcol_exporter_queue_batch_send_size*.
  otelcol_exporter_queue_batch_send_size and otelcol_exporter_queue_batch_send_size_bytes
  are now only recorded when sending_queue::batch is configured; they will not appear at all
  for exporters that do not enable batching.

• pkg/scraperhelper: Use {record} instead of {datapoint} as the unit of the log record and profile record scraper metrics (#​15730)
  Affects otelcol_scraper_scraped_log_records, otelcol_scraper_errored_log_records,
  otelcol_scraper_scraped_profile_records and otelcol_scraper_errored_profile_records.

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[renovate]

ℹ️ Artifact update notice

File name: runners/go/go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 5 additional dependencies were updated
• The go directive was updated for compatibility reasons

Due to Go's usage of Minimal Version Selection (MVS), these packages have been updated to the minimum version available, so will still abide by minimumReleaseAge=3 days

Details:

Package	Change
go	1.25.0 -> 1.26.0
go.opentelemetry.io/collector/featuregate	v1.64.0 -> v1.66.0
golang.org/x/net	v0.57.0 -> v0.58.0
golang.org/x/text	v0.40.0 -> v0.41.0
google.golang.org/grpc	v1.83.0 -> v1.83.2
google.golang.org/protobuf	v1.36.11 -> v1.36.12