fix(config): stringify pydantic error loc before join (#5884) #3926

Job	Run time
changes	7s
test-dbt-versions (1.6)	1m 35s
test-dbt-versions (1.5)	1m 37s
test-dbt-versions (1.8)	1m 36s
test-dbt-versions (1.9)	1m 42s
test-dbt-versions (1.10)	1m 49s
test-dbt-versions (1.3)	2m 55s
test-dbt-versions (1.7)	1m 39s
test-dbt-versions (1.4)	1m 31s
test-vscode-e2e	-1s
test-vscode	-1s
cicd-tests-windows	9m 55s
doc-tests	35s
ui-test	1m 29s
migration-test	1m 37s
style-and-cicd-tests (3.13)	24m 17s
style-and-cicd-tests (3.12)	18m 55s
style-and-cicd-tests (3.10)	23m 46s
style-and-cicd-tests (3.11)	23m 35s
style-and-cicd-tests (3.9)	23m 41s
engine-tests-docker (mysql)	1m 58s
engine-tests-docker (mssql)	2m 7s
engine-tests-docker (duckdb)	1m 33s
engine-tests-docker (trino)	8m 19s
engine-tests-docker (risingwave)	2m 52s
engine-tests-docker (starrocks)	2m 28s
engine-tests-docker (postgres)	2m 26s
engine-tests-docker (clickhouse)	3m 20s
engine-tests-docker (spark)	5m 33s
ui-style	-1s
engine-tests-cloud (snowflake)	12m 12s
engine-tests-cloud (bigquery)	16m 7s
engine-tests-cloud (athena)	20m 52s
engine-tests-cloud (databricks)	14m 31s
engine-tests-cloud (clickhouse-cloud)	11m 7s
engine-tests-cloud (redshift)	5m 20s
engine-tests-cloud (gcp-postgres)	3m 14s
engine-tests-cloud (fabric)	5m 9s
	4h 21m 26s

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