Merge pull request #107 from FirelyTeam/update-sushi-version-3.18.1

Update SUSHI_VERSION to 3.18.1

Author: alexzautke

action.yml

@@ -56,7 +56,7 @@ inputs:
     default: 'https://github.com/hapifhir/org.hl7.fhir.core/releases/download/$JAVA_VALIDATOR_VERSION/validator_cli.jar'
   SUSHI_VERSION:
     description: 'Version of SUSHI used for compiling the FSH files'
-    default: '3.18.0'
+    default: '3.18.1'
     required: true
   TERMINOLOGY_SERVICE_BFARM_ENABLED:
     description: 'Enables downloading packages from the central terminology server for Germany (https://terminologien.bfarm.de/fhirpackages.html)'