Fix release workflow: fetch git tags for changelog generation

The checkout wasn't fetching tags despite fetch-depth: 0.
Explicitly run git fetch --tags --force after checkout.

.github/workflows/release.yml

@@ -120,6 +120,9 @@ jobs:
         with:
           fetch-depth: 0  # Fetch all history for tags
 
+      - name: Fetch all tags
+        run: git fetch --tags --force
+
       - name: Set up Go
         uses: actions/setup-go@v5
         with: