fix(ci): use workflow_dispatch tag input for GitHub Release tag_name

When triggered via workflow_dispatch, github.ref_name is the branch
name (main), not the tag. The release was being attached to a ghost
'main' release instead of the intended v0.7.0 release.

Use github.event.inputs.tag || github.ref_name to correctly resolve
the tag in all three trigger modes (push tag, release published,
workflow_dispatch).

Author: bocan

.github/workflows/release.yml

@@ -301,7 +301,7 @@ jobs:
         uses: softprops/action-gh-release@v3
         with:
           name: ${{ env.RELEASE_VERSION }}
-          tag_name: ${{ github.ref_name }}
+          tag_name: ${{ github.event.inputs.tag || github.ref_name }}
           body_path: ${{ steps.notes.outputs.notes_path }}
           files: |
             build/Bocan.dmg