chore: configure semgrep ci job

Author: jakelacey2012

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 15.x, 16.x., 18.x]
+        node-version: [12.x, 14.x, 15.x, 16.x, 18.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:

.github/workflows/semgrep.yml

@@ -0,0 +1,18 @@
+name: Semgrep
+
+on:
+  pull_request_target: {}
+  push:
+    branches: ["master", "main"]
+jobs:
+  semgrep:
+    name: Scan
+    runs-on: ubuntu-latest
+    container:
+      image: returntocorp/semgrep
+    if: (github.actor != 'dependabot[bot]' && github.actor != 'snyk-bot')
+    steps:
+      - uses: actions/checkout@v3
+      - run: semgrep ci
+        env:
+          SEMGREP_APP_TOKEN: ${{ secrets.SEMGREP_APP_TOKEN }}