ci: fix scala-steward message title (#471)

Signed-off-by: Fabio Pinheiro <fabiomgpinheiro@gmail.com>

Author: FabioPinheiro

.scala-steward.conf

@@ -20,4 +20,11 @@ updates.ignore = [
 # If set, Scala Steward will use this message template for the commit messages and PR titles.
 # Supported variables: ${artifactName}, ${currentVersion}, ${nextVersion} and ${default}
 # Default: "${default}" which is equivalent to "Update ${artifactName} to ${nextVersion}"
-commits.message = "${default}\n\nSigned-off-by: Hyperledger Bot <hyperledger-bot@hyperledger.org>"
+commits.message = "${default}"
+
+# If true, Scala Steward will sign off all commits (e.g. `git --signoff`).
+# Default: false
+signoffCommits = true
+
+assignees = [ "FabioPinheiro" ]
+