github: fix actions.

The command add-path within the changed actions has been deprecated
according to

https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/

Use shogo82148/actions-setup-perl for strawberryperl on windows.
Upgrade setup-ruby to 1.1.2 on macos.

.github/workflows/macos.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Install biplist
         run: pip install biplist
       - name: Set up Ruby 2.6
-        uses: actions/setup-ruby@v1.1.1
+        uses: actions/setup-ruby@v1.1.2
         with:
           ruby-version: '2.6'
       - name: Install deps

.github/workflows/windows.yml

@@ -14,13 +14,14 @@ jobs:
       - name: Install winflexbison3
         run: cinst -y --force winflexbison3 --version 2.5.18.20190508
       - name: Install strawberryperl
-        run: |
-          choco install strawberryperl
-          echo "##[add-path]C:\strawberry\c\bin;C:\strawberry\perl\site\bin;C:\strawberry\perl\bin"
+        uses: shogo82148/actions-setup-perl@v1
+        with:
+          perl-version: '5.30'
+          distribution: strawberry
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
       - name: Add msbuild to PATH
-        uses: microsoft/setup-msbuild@v1.0.0
+        uses: microsoft/setup-msbuild@v1.0.2
         with:
           vs-version: 16.4
       - name: Set MSVC command prompt