Update maven.yml

use new version of github action for solo

Author: hendrikebbers

.github/workflows/maven.yml

@@ -32,7 +32,7 @@ jobs:
 
       - name: Prepare Hedera Solo
         id: solo
-        uses: OpenElements/hedera-solo-action@v0.2
+        uses: OpenElements/hedera-solo-action@v0.3
         with:
           installMirrorNode: true