DEVOPS-977 default zizmor config to allow MiraGeoscience unpinned actions

Author: andrewg-mira

.github/actions/setup-zizmor-config/action.yml

@@ -6,12 +6,16 @@ runs:
     - name: Ensure default zizmor.yml
       shell: bash
       run: |
-        if [ ! -f zizmor.yml ]; then
+        if [[ ! -f zizmor.yml || $(wc -l < zizmor.yml) -eq 1 ]]; then
           echo "Creating a custom zizmor.yml configuration file for CI..."
           cat > zizmor.yml << 'EOF'
         rules:
           dependabot-cooldown:
             disable: true
+          unpinned-uses:
+            config:
+              policies:
+                MiraGeoscience/*: any
         EOF
         else
           echo "⊘ Found existing zizmor.yml configuration file"