fix(events): re-add kerberos tools to container image (#6007)

src/Events/Dockerfile

@@ -50,6 +50,7 @@ RUN apt-get update \
     && apt-get install -y --no-install-recommends \
     gosu \
     curl \
+    krb5-user \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy app from the build stage