Adding trivy vulnerability scan and updates to dependabot

.github/dependabot.yml

@@ -6,14 +6,16 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "monthly"
+    target-branch: "develop"
     reviewers:
       - "joshua-seals"
 
   - package-ecosystem: "pip"
     directory: "/tycho"
     schedule:
       interval: "monthly"
+    target-branch: "develop"
     reviewers:
       - "joshua-seals"
       - "Hoid"

.github/workflows/trivy-pr-scan.yml

@@ -0,0 +1,41 @@
+name: trivy-pr-scan 
+on:
+  pull_request:
+    branches:
+      - develop
+      - master
+      - main 
+    types: [ opened, synchronize ]
+    paths-ignore:
+    - README.md
+    - .old_cicd/*
+    - .github/*
+    - .github/workflows/*
+    - LICENSE
+    - .gitignore
+    - .dockerignore
+    - .githooks
+
+jobs:
+ trivy-pr-scan:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    # We will not be concerned with Medium and Low vulnerabilities
+    - name: Run Trivy vulnerability scanner
+      uses: aquasecurity/trivy-action@master
+      with:
+        scan-type: 'fs'
+        format: 'sarif'
+        severity: 'CRITICAL,HIGH'
+        output: 'trivy-results.sarif'
+        exit-code: '1'
+    # Scan results should be viewable in GitHub Security Dashboard
+    # We still fail the job if results are found, so below will always run
+    # unless manually canceled.
+    - name: Upload Trivy scan results to GitHub Security tab
+      uses: github/codeql-action/upload-sarif@v2
+      if: '!cancelled()'
+      with:
+        sarif_file: 'trivy-results.sarif'