deps: update googleapis/sdk-platform-java action to v2.48.0 (#2786)

Author: renovate-bot

.github/workflows/hermetic_library_generation.yaml

@@ -43,7 +43,7 @@ jobs:
  with:
  fetch-depth: 0
  token: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}
- - uses: googleapis/sdk-platform-java/.github/scripts@v2.47.0
+ - uses: googleapis/sdk-platform-java/.github/scripts@v2.48.0
  if: env.SHOULD_RUN == 'true'
  with:
  base_ref: ${{ github.base_ref }}