ci: skip Extract changelog if not release in rime/weasel and msbuild

fix

Author: fxliang

.github/workflows/ci.yml

@@ -164,7 +164,7 @@ jobs:
 
       # Release-only steps (run on tags or master)
       - name: Extract changelog
-        if: ${{ startsWith(github.ref, 'refs/tags/') && matrix.variant == 'msbuild' }}
+        if: ${{ github.repository == 'rime/weasel' && startsWith(github.ref, 'refs/tags/') && matrix.variant == 'msbuild' }}
         shell: pwsh
         run: .\extract_changelog.ps1