Use cache, build using xcode, add dependabot

Author: ffried

.github/workflows/release.yml

@@ -11,14 +11,20 @@ jobs:
     runs-on: macos-latest
     steps:
       - run: sudo xcode-select -s /Applications/Xcode_12.1.app/Contents/Developer
-      - uses: actions/checkout@v2
-      - uses: dawidd6/action-get-tag@v1.0.0
+      - uses: dawidd6/action-get-tag@v1
         id: get-tag
+      - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: .build
+          key: ${{runner.os}}-spm-${{hashFiles('**/Package.resolved')}}
+          restore-keys: |
+            ${{runner.os}}-spm-
       - uses: sersoft-gmbh/swifty-docs-action@v1
         with:
           module-version: ${{steps.get-tag.outputs.tag}}
           output: docs
-      - uses: crazy-max/ghaction-github-pages@v1.4.0
+      - uses: crazy-max/ghaction-github-pages@v2.1.3
         with:
           build_dir: docs
         env:

.github/workflows/swift-test.yml

@@ -12,6 +12,12 @@ jobs:
     steps:
       - run: sudo xcode-select -s /Applications/Xcode_12.1.app/Contents/Developer
       - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: .build
+          key: ${{runner.os}}-spm-${{hashFiles('**/Package.resolved')}}
+          restore-keys: |
+            ${{runner.os}}-spm-
       - name: Generate Linux Tests
         run: swift test --generate-linuxmain
       - name: Check for git differences
@@ -35,6 +41,12 @@ jobs:
   #         release-version: 5.3
   #         platform: ${{matrix.os}}
   #     - uses: actions/checkout@v2
+  #     - uses: actions/cache@v2
+  #       with:
+  #         path: .build
+  #         key: ${{runner.os}}-spm-${{hashFiles('**/Package.resolved')}}
+  #         restore-keys: |
+  #           ${{runner.os}}-spm-
   #     - name: Build & Test
   #       run: swift test -v --parallel --enable-code-coverage
   #     - name: Generate Coverage Files