Fix caching of downloaded runtimes

Author: mattrubin

.github/actions/prepare-simulator/action.yml

@@ -38,7 +38,7 @@ runs:
           echo "::group::Available runtimes:"
           xcodes runtimes
           echo "::endgroup::"
-          sudo xcodes runtimes install "$RUNTIME";
+          sudo xcodes runtimes install "$RUNTIME" --keep-archive;
         fi
 
     - name: "Create and boot simulator"

.github/workflows/xcode.yml

@@ -29,7 +29,7 @@ jobs:
       - name: "Cache downloaded simulator runtimes"
         uses: actions/cache@v4
         with:
-          path: ~/Library/Caches/XcodeInstall/*.dmg
+          path: ~/Downloads/*.dmg
           key: Xcode ${{ matrix.env.xcode }}+${{ matrix.env.runtime }}
       - name: "Prepare simulator"
         id: prepare-simulator
@@ -75,7 +75,7 @@ jobs:
       - name: "Cache downloaded simulator runtimes"
         uses: actions/cache@v4
         with:
-          path: ~/Library/Caches/XcodeInstall/*.dmg
+          path: ~/Downloads/*.dmg
           key: Xcode ${{ matrix.env.xcode }}+${{ matrix.env.runtime }}
       - name: "Prepare simulator"
         id: prepare-simulator