Append HOME to USERPROFILE

Author: zbynek

.github/workflows/maven.yml

@@ -82,6 +82,8 @@ jobs:
       run: mvn install -B --show-version --file javacc-8-core/pom.xml
 
     - name: Run install on javacc-8-java
+      env:
+        USERPROFILE: ${{ env.USERPROFILE }}${{ env.HOME }}
       run: mvn install -B --show-version --file javacc-8-java/pom.xml
 
     - name: Upload output files for review