[MAINTENANCE] Additional tests for `ValidationDefinition` and `Checkpoint` freshness #18018

Job	Run time
static-analysis	4m 2s
unit-tests (ubuntu-latest, 3.8)	2m 57s
unit-tests (ubuntu-latest, 3.9)	3m 24s
docs-tests	58s
unit-tests (ubuntu-latest, 3.10)	3m 42s
ci-is-on-main-repo	1s
unit-tests (ubuntu-latest, 3.11)	2m 20s
unit-tests (ubuntu-latest, 3.12)	4m 15s
ci-does-not-run-on-draft-pull-requests	0s
doc-checks	54s
import_gx (3.8)	39s
import_gx (3.11)	33s
py39-min-versions	1m 32s
cloud-tests	7m 12s
py38-min-versions	1m 34s
marker-tests (athena or clickhouse or openpyxl or pyarrow or project or sqlite or aws_creds, 3.8)	2m 25s
marker-tests (aws_deps, 3.8)	3m 7s
marker-tests (aws_deps, 3.12)	2m 31s
marker-tests (big, 3.8)	2m 12s
py312-min-versions	1m 37s
marker-tests (big, 3.12)	2m 20s
py310-min-versions	1m 36s
marker-tests (databricks, 3.8)	5m 46s
marker-tests (filesystem, 3.8)	2m 53s
marker-tests (filesystem, 3.12)	3m 3s
airflow-min-versions	55s
py311-min-versions	1m 23s
marker-tests (mssql, 3.8)	4m 54s
marker-tests (mssql, 3.12)	5m 22s
marker-tests (mysql, 3.8)	4m 20s
pydantic-v1	1m 44s
marker-tests (mysql, 3.12)	4m 48s
marker-tests (postgresql, 3.8)	4m 33s
marker-tests (postgresql, 3.12)	5m 3s
marker-tests (snowflake, 3.8)	7m 25s
marker-tests (spark, 3.8)	7m 49s
marker-tests (spark, 3.12)	10m 22s
marker-tests (trino, 3.8)	5m 55s
marker-tests (trino, 3.12)	6m 25s
docs-snippets (docs-creds-needed)	3m 26s
docs-snippets (docs-basic)	3m 46s
docs-build	5m 39s
docs-snippets (docs-spark)	3m 9s
Build and publish Python distributions to PyPI	0s
notify_on_release	0s
notify_on_failure	0s
	2h 28m 31s

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