[GSoC-273] Fixing the github action Unmanaged Service Account Keys - #39177

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

gradle/actions/setup-gradle@50e97c2cd7a37755bbfafc9c5b7cafaece252f6e is allowlisted but its approved pin expires on 2026-09-03 (in 15 day(s)); bump to a newer approved version to avoid a future CI failure.