package.json,CI.yml: add devDependencies

These are packages that are only needed for local development
and testing and adding them will make it easier to develop
your application. They are not required when your application
is deployed in production.

.github/workflows/CI.yml

@@ -141,6 +141,7 @@ jobs:
           git --version
           node --version
           npm --version
+          npx tsc --version
           npx commitlint --version
           yarn --version
       - name: Run tests to validate our plugins

package.json

@@ -1,5 +1,10 @@
 {
     "dependencies": {
-      "cosmiconfig": "8.0.0"
+        "cosmiconfig": "8.0.0"
+    },
+    "devDependencies": {
+        "@commitlint/types": "^17.4.4",
+        "@types/jest": "^29.5.5",
+        "@types/node": "^20.6.2"
     }
 }