Fix Docker image source label

This should hopefully™️ help retrieving correct changelog information in
Renovate PRs such as jenkinsci/helm-charts#1135.

Signed-off-by: justusbunsi <61625851+justusbunsi@users.noreply.github.com>

debian/Dockerfile

@@ -143,7 +143,7 @@ LABEL \
   org.opencontainers.image.description="This is an image for Jenkins agents using TCP or WebSockets to establish inbound connection to the Jenkins controller" \
   org.opencontainers.image.version="${VERSION}" \
   org.opencontainers.image.url="https://www.jenkins.io/" \
-  org.opencontainers.image.source="https://github.com/jenkinsci/docker-agent-inbound" \
+  org.opencontainers.image.source="https://github.com/jenkinsci/docker-agent" \
   org.opencontainers.image.licenses="MIT"
 
 ENTRYPOINT ["/usr/local/bin/jenkins-agent"]