Update checkout

Author: aaronparker

.github/workflows/new-release.yml

@@ -21,7 +21,9 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v3.0.2
+        with:
+          ref: main
 
       # Import GPG key
       - name: Import GPG key

.github/workflows/powershell-analysis.yml

@@ -12,7 +12,7 @@ jobs:
     name: PSScriptAnalyzer
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.0.2
 
       - name: Run PSScriptAnalyzer
         uses: microsoft/psscriptanalyzer-action@2044ae068e37d0161fa2127de04c19633882f061

.github/workflows/validate-scripts.yml

@@ -26,7 +26,9 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v3.0.2
+        with:
+          ref: main
 
       # Import GPG key
       - name: Import GPG key