Upload to GCS first, shorten the feedback loop

Author: martinbonnin

.github/workflows/publish-snapshot.yaml

@@ -11,8 +11,8 @@ jobs:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
       - uses: gradle/actions/setup-gradle@dbbdc275be76ac10734476cc723d82dfe7ec6eda #v3.4.2
       - run: |
-          ./gradlew librarianPublishToSnapshots
           LIBRARIAN_VERSION_SHA1=$GITHUB_SHA ./gradlew librarianPublishToGcs
+          ./gradlew librarianPublishToSnapshots
         env:
           LIBRARIAN_SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
           LIBRARIAN_SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}