Fix typo

Author: tstellar

.github/workflows/release-binaries.yml

@@ -291,7 +291,7 @@ jobs:
         ninja -v -C libxml-build install
 
     - name: Install libxml2
-      bash: shell
+      shell: bash
       env:
         VCPKG_CMAKE_CONFIGURE_OPTIONS: "-DBUILD_SHARED_LIBS=OFF"
       run: |