mac/iOS: CI uses 12.x branch of love-apple-dependencies

.github/workflows/main.yml

@@ -148,7 +148,7 @@ jobs:
       with:
         path: apple-dependencies
         repository: love2d/love-apple-dependencies
-        ref: main
+        ref: 12.x
     - name: Move Dependencies
       run:
         mv apple-dependencies/macOS/Frameworks platform/xcode/macosx
@@ -176,7 +176,7 @@ jobs:
       with:
         path: apple-dependencies
         repository: love2d/love-apple-dependencies
-        ref: main
+        ref: 12.x
     - name: Move Dependencies
       run: |
         mv apple-dependencies/iOS/libraries platform/xcode/ios