fix: improve GitHub Actions workflow by restructuring installation steps for clarity

.github/workflows/build-and-push.yml

@@ -13,11 +13,17 @@ jobs:
       - uses: actions/checkout@v6
 
       - name: Install mise
-        run: curl https://mise.run | sh
+        run: |
+          curl https://mise.run | sh
+          echo "$HOME/.local/bin" >> $GITHUB_PATH
+          echo "$HOME/.local/share/mise/shims" >> $GITHUB_PATH
 
-      - name: Setup environment
+      - name: Install tools via mise
         run: |
           mise install
+
+      - name: Setup
+        run: |
           just setup
 
       - name: Run tests