chore: bump version to 0.30.0

main advanced to 0.29.0 since we last rebased (commit 101492b on main).
Our 0.28.1 would fail the 'Check Version Bump' CI job which requires
strictly greater than main.

Going to 0.30.0 (minor) rather than 0.29.1 (patch) — this PR adds
substantive new public API (ContentFiltering / InputFiltering /
OutputFiltering / AzureContentFilter / LlamaGuard38bFilter classes;
set_filtering / disable_filtering entry points; Severity enum;
AICORE_FILTER_* env-var protocol). Patch-version connotes bugfix-only,
which understates the surface change.

Author: lenin-ribeiro

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "sap-cloud-sdk"
-version = "0.28.1"
+version = "0.30.0"
 description = "SAP Cloud SDK for Python"
 readme = "README.md"
 license = "Apache-2.0"