add license-checkers github action

.github/pull_request_template.md

@@ -46,6 +46,7 @@ Your changes will be ready for merging after all of the steps below have been co
 ### Code updates
 Have best practices and ongoing refactors being observed in this PR
 - [ ] Migrated any selector / reducer used to the new format.
+- [ ] All new dependency licenses have been checked for compatibility
 
 ### Manual/unit testing
 - [ ] Tested changes using InfraMock locally **or** no tests required for change, e.g. Kubernetes chart updates.

.github/workflows/ci.yaml

@@ -91,6 +91,15 @@ jobs:
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v1
 
+    - id: check-licenses
+      name: Check licenses
+      env:
+        ALLOWED_LICENSES: "MIT;ISC;Apache-2.0;BSD-3-Clause;BSD-2-Clause;(MIT OR Apache-2.0);Unlicense;Python-2.0;BSD;(AFL-2.1 OR BSD-3-Clause);0BSD"
+        EXCLUDE_PACKAGES: "[email protected]"
+      run: |-
+        npm install -g license-checker
+        license-checker --production --json --onlyAllow="${ALLOWED_LICENSES}" --excludePackages="${EXCLUDE_PACKAGES}"
+
     - id: send-to-slack
       name: Send failure notification to Slack
       if: failure() && github.event_name == 'push'