chore: fix classifier deploy workflow

PRM versions are not commited anymore during release.
This change computes latest release version from tag
and updates the maven POMs before building and deploying
the artifact with vaadin classifier.

.github/workflows/deploy-classifiers.yml

@@ -22,7 +22,12 @@ jobs:
           ref: ${{ matrix.branch }}
           fetch-depth: 0
       - name: Checkout latest tag
-        run: git checkout $(git describe --abbrev=0 --tags --match="flow-*")
+        id: checkout-tag
+        run: |
+          TAG=$(git describe --abbrev=0 --tags --match="flow-*")
+          VERSION=${TAG/flow-/}
+          echo "vertx-vaadin-version=${VERSION}" >> "$GITHUB_OUTPUT"
+          git checkout $TAG
       - name: Set up Java
         uses: actions/setup-java@v3
         with: # running setup-java again overwrites the settings.xml
@@ -33,6 +38,8 @@ jobs:
           server-password: REPSY_PASSWORD
           gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }} # Value of the GPG private key to import
           gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase
+      - name: Set version
+        run: mvn -N -ntp versions:set -DnewVersion="${{ steps.checkout-tag.outputs.vertx-vaadin-version }}"
       - name: Deploy classifiers
         run: |
           ./mvnw -N -ntp install