fix: Handle existing GitHub releases gracefully

- Replace deprecated actions/create-release with gh CLI
- Check if release already exists before creating new one
- Skip release creation if release already exists for tag
- Prevents workflow failures on duplicate releases

Author: 0xvasanth

.github/workflows/version-bump.yml

@@ -145,14 +145,15 @@ jobs:
           CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
 
       - name: Create GitHub Release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: v${{ env.new_version }}
-          release_name: Release v${{ env.new_version }}
-          body: |
-            ## Changes in this release
+        run: |
+          # Check if release already exists
+          if gh release view "v${{ env.new_version }}" >/dev/null 2>&1; then
+            echo "Release v${{ env.new_version }} already exists, skipping release creation"
+          else
+            echo "Creating new release v${{ env.new_version }}"
+            gh release create "v${{ env.new_version }}" \
+              --title "Release v${{ env.new_version }}" \
+              --notes "## Changes in this release
 
             This release was automatically created from PR #${{ github.event.pull_request.number }}
 
@@ -165,12 +166,13 @@ jobs:
             ### Published to crates.io
             ${{ steps.check_version.outputs.version_exists == 'false' && 'This version has been published to [crates.io](https://crates.io/crates/gonfig) and is available for use in your projects.' || 'This version was already available on [crates.io](https://crates.io/crates/gonfig).' }}
             
-            ```toml
+            \`\`\`toml
             [dependencies]
-            gonfig = "${{ env.new_version }}"
-            ```
-          draft: false
-          prerelease: false
+            gonfig = \"${{ env.new_version }}\"
+            \`\`\`"
+          fi
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Update main branch with new version
         run: |