GH-461 - Explicitly use clean verify for integration builds.

To make sure we always use fresh dependencies.

Author: odrotbohm

.github/workflows/integration.yaml

@@ -36,4 +36,4 @@ jobs:
       run: |
         cd spring-modulith-examples
         ../mvnw -B versions:update-parent -DskipResolution=true -DparentVersion=${{ matrix.version }}
-        ../mvnw -B -Pwith-preview-repos -Dspring-boot.version=${{ matrix.version }}
+        ../mvnw -B clean verify -Pwith-preview-repos -Dspring-boot.version=${{ matrix.version }}