[MNT] add swipl path to github env var

.github/workflows/build-and-test.yaml

@@ -42,7 +42,9 @@ jobs:
       run: choco install swi-prolog
     - name: Install SWI-Prolog on MACOS
       if: matrix.os == 'macos-latest'
-      run: brew install swi-prolog
+      run: |
+        brew install swi-prolog
+        echo "SWI_HOME_DIR=/usr/local/lib/swipl" >> $GITHUB_ENV
 
     - name: Install package dependencies
       run: |