ci: install just

.github/workflows/lint-test.yml

@@ -21,6 +21,7 @@ jobs:
         nvim-versions: ["stable", "nightly"]
     name: test
     steps:
+      - uses: extractions/setup-just@v1
       - name: checkout
         uses: actions/checkout@v3
 
@@ -30,4 +31,4 @@ jobs:
           version: ${{ matrix.nvim-versions }}
 
       - name: run tests
-        run: make test
+        run: just test