Update GitHub Action workflow

Signed-off-by: Glenn Lewis <[email protected]>

.github/workflows/check.yml

@@ -3,7 +3,7 @@ name: check
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 
 jobs:
@@ -38,6 +38,14 @@ jobs:
           moon version --all
           moonrun --version
 
+      - name: moon update
+        run: |
+          moon update
+
+      - name: moon install
+        run: |
+          moon install
+
       - name: moon check
         run: moon check --deny-warn