Chore: Bump solo-action version to v0.18.0 (#52)

Signed-off-by: Ndacyayisenga-droid <ndacyayinoah@gmail.com>

Author: Ndacyayisenga-droid

.github/workflows/maven.yml

@@ -35,7 +35,7 @@ jobs:
 
       - name: Prepare Hiero Solo
         id: solo
-        uses: hiero-ledger/hiero-solo-action@4d42a74e8e644a2753f3bb7a2afa429305375b14 # v0.17.0
+        uses: hiero-ledger/hiero-solo-action@692b186bd2e4c8d46b9deb1c067dc6ddcf0abcd7 # v0.18.0
         with:
           installMirrorNode: true
           hieroVersion: v0.66.0