Run tests under bash on Windows

Author: vrza

.github/workflows/build.yml

@@ -25,7 +25,7 @@ jobs:
           - virtual-environment: macos-latest
             node: 24
           - virtual-environment: macos-latest
-            node: 25
+            node: latest
 
     runs-on: ${{ matrix.virtual-environment }}
 
@@ -59,4 +59,5 @@ jobs:
       run: node node_modules/eslint/bin/eslint .
 
     - name: Run test suite
+	  shell: bash
       run: node node_modules/mocha/bin/mocha tests