Update the test action

.github/workflows/test.yaml

@@ -0,0 +1,25 @@
+name: Test
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - '*'
+
+env:
+  FORCE_COLOR: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: package.json
+          cache: pnpm
+      - run: pnpm install
+      - run: pnpm test

README.md

@@ -182,4 +182,4 @@ Conjure is invoked via the command line:
 [npm-image]: https://img.shields.io/npm/v/%40firefoxic%2Fconjure?logo=npm&color=limegreen
 
 [test-url]: https://github.com/firefoxic/conjure/actions
-[test-image]: https://github.com/firefoxic/conjure/actions/workflows/test.yml/badge.svg?branch=main
+[test-image]: https://github.com/firefoxic/conjure/actions/workflows/test.yaml/badge.svg?branch=main