build: marking dependencies (8) non-required (#1472)

Co-authored-by: Anthonios Partheniou <[email protected]>

Author: suztomo

synthtool/gcp/templates/java_library/.github/sync-repo-settings.yaml

@@ -41,7 +41,6 @@ branchProtectionRules:
   requiresStrictStatusChecks: false
   # List of required status check contexts that must pass for commits to be accepted to matching branches.
   requiredStatusCheckContexts:
-  - "dependencies (8)"
   - "dependencies (11)"
   - "lint"
   - "units (8)"