[CI] Fix macOS by using older version of premake

Author: Jarod42

.github/workflows/premake5-mac-xcode4.yml

@@ -38,6 +38,7 @@ jobs:
       uses: ./.github/actions/install-premake5
       with:
           repository: premake/premake-core
+          ref: v5.0.0-beta7
 
     - name: test projects default(clang)
       run: python3 ./test_projects.py premake5 projects xcode4

.github/workflows/premake5-qt-mac-xcode4.yml

@@ -45,6 +45,7 @@ jobs:
       uses: ./.github/actions/install-premake5
       with:
           repository: premake/premake-core
+          ref: v5.0.0-beta7
 
     - name: Installing Qt${{matrix.qt-version}} macos
       uses: jurplel/install-qt-action@v4