add vendor to path directly in CI

Author: chrisirhc

.github/workflows/ci.yml

@@ -8,10 +8,9 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - name: ⚙️ Install direnv
+    - name: Add vendored flutter to PATH
       run: |
-        sudo apt-get -y install direnv
-        eval "$(direnv hook bash)"
+        echo vendor/flutter/bin >> "$GITHUB_PATH"
 
     - name: Download Flutter SDK artifacts (flutter precache)
       run: flutter precache --universal