MassInstallAction: Install the CompatHelper workflow on this repository

.github/workflows/CompatHelper.yml

@@ -2,15 +2,18 @@ name: CompatHelper
 
 on:
   schedule:
-    - cron: '00 * * * *'
+    - cron: '00 00 * * *'
+  workflow_dispatch:
 
 jobs:
   CompatHelper:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        julia-version: [1.2.0]
+        julia-arch: [x86]
+        os: [ubuntu-latest]
     steps:
-      - uses: julia-actions/setup-julia@latest
-        with:
-          version: 1.3
       - name: Pkg.add("CompatHelper")
         run: julia -e 'using Pkg; Pkg.add("CompatHelper")'
       - name: CompatHelper.main()