Attempt at fixing p2 publishing, take 2

Signed-off-by: Fred Bricon <fbricon@gmail.com>

Author: fbricon

.github/workflows/deploy-p2.yaml

@@ -18,7 +18,7 @@ jobs:
 
     - name: Build with Maven
       run: |
-        xvfb-run
+        xvfb-run \
         ./mvnw -B verify
         version=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
         echo "PROJECT_VERSION=${version%"-SNAPSHOT"}" >> $GITHUB_ENV