ci: match any windows runner when staging the release archive

The zip-vs-tarball branch only recognized the single existing
windows-2022 runner by exact name, which would silently fall through to
the tarball branch for any other Windows runner.

.github/workflows/post-release.yml

@@ -109,7 +109,7 @@ jobs:
         mkdir -p "$staging"/doc
         cp {README.md,LICENSE-*} "$staging/"
         cp {CHANGELOG.md,docs/*} "$staging/doc/"
-        if [ "${{ matrix.os }}" = "windows-2022" ]; then
+        if [[ "${{ matrix.os }}" == windows-* ]]; then
           cp "target/${{ matrix.target }}/release/${{ env.BIN_NAME }}.exe" "$staging/"
           ls -l "$staging"
           cd "$staging"