don't check for BC entries for prerelease versions (#29566)

airbyte-ci/connectors/metadata_service/lib/metadata_service/validators/metadata_validator.py

@@ -98,7 +98,7 @@ def validate_all_tags_are_keyvalue_pairs(
 def is_major_version(version: str) -> bool:
     """Check whether the version is of format N.0.0"""
     semver_version = semver.Version.parse(version)
-    return semver_version.minor == 0 and semver_version.patch == 0
+    return semver_version.minor == 0 and semver_version.patch == 0 and semver_version.prerelease is None
 
 
 def validate_major_version_bump_has_breaking_change_entry(

airbyte-ci/connectors/metadata_service/lib/tests/fixtures/metadata_validate/valid/metadata_breaking_change_prerelease.yaml

@@ -0,0 +1,19 @@
+metadataSpecVersion: 1.0
+data:
+  name: AlloyDB for PostgreSQL
+  definitionId: 1fa90628-2b9e-11ed-a261-0242ac120002
+  connectorType: source
+  dockerRepository: airbyte/image-exists-1
+  githubIssueLabel: source-alloydb-strict-encrypt
+  dockerImageTag: 2.0.0-dev.cf3628ccf3
+  documentationUrl: https://docs.airbyte.com/integrations/sources/alloydb
+  connectorSubtype: database
+  releaseStage: generally_available
+  license: MIT
+  releases:
+    breakingChanges:
+      2.0.0:
+        upgradeDeadline: 2023-08-22
+        message: "This version changes the connector’s authentication method from `ApiKey` to `oAuth`, per the [API guide](https://amazon-sqs.com/api/someguide)."
+  tags:
+    - language:java