refs/heads/58-push-a-tag-after-testing-artifacts (#67)

## Test evidence

In
https://github.com/fairy-select/chronovoyage/actions/runs/11874448826,
the `push-tag` job has properly failed because of tag duplicates and the
other jobs have succeed.

---------

Co-authored-by: Noritaka IZUMI <[email protected]>

.github/workflows/create-new-release.yml

@@ -11,12 +11,10 @@ env:
   tag-prefix: "v"
 
 jobs:
-  push-tag:
-    name: Push a tag
+  get-tag-name:
     if: ${{ contains(github.event.pull_request.labels.*.name, 'new release') && github.event.pull_request.merged }}
+    name: Get current version
     runs-on: ubuntu-latest
-    permissions:
-      contents: write
     outputs:
       version: ${{ steps.tag.outputs.version }}
       tag: ${{ steps.tag.outputs.tag }}
@@ -27,40 +25,59 @@ jobs:
       - name: Install Hatch
         uses: pypa/hatch@install
 
-      - name: Configure git
-        run: |
-          git config user.name 'github-actions[bot]'
-          git config user.email 'github-actions[bot]@users.noreply.github.com'
-
-      - name: Push a tag
+      - name: Get current version and create tag name
         id: tag
         run: |
           version="$(hatch version)"
           tag="${{ env.tag-prefix }}${version}"
-          git tag -a ${tag} -m "New release ${tag} (tagged by github-actions[bot])"
-          git push origin ${tag}
           echo "version=${version}" >> $GITHUB_OUTPUT
           echo "tag=${tag}" >> $GITHUB_OUTPUT
 
   build-package:
     needs:
-      - push-tag
+      - get-tag-name
     uses: ./.github/workflows/build-pip-package.yml
     with:
-      version: ${{ needs.push-tag.outputs.version }}
+      version: ${{ needs.get-tag-name.outputs.version }}
 
   build-docs:
     needs:
-      - push-tag
+      - get-tag-name
     uses: ./.github/workflows/build-docs.yml
 
+  push-tag:
+    name: Push a tag
+    needs:
+      - get-tag-name
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    outputs:
+      tag: ${{ steps.tag.outputs.tag }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Configure git
+        run: |
+          git config user.name 'github-actions[bot]'
+          git config user.email 'github-actions[bot]@users.noreply.github.com'
+
+      - name: Push a tag
+        id: tag
+        run: |
+          tag=${{ needs.get-tag-name.outputs.tag }}
+          git tag -a ${tag} -m "New release ${tag} (tagged by github-actions[bot])"
+          git push origin ${tag}
+          echo "tag=${tag}" >> $GITHUB_OUTPUT
+
   create-release:
     name: Create a release
     runs-on: ubuntu-latest
     needs:
-      - push-tag
       - build-package
       - build-docs
+      - push-tag
     permissions:
       contents: write
     steps: