comms(synapse): fix signingkey secret patch job

services/communication/synapse-signingkey-ensure-job.yaml

@@ -2,7 +2,7 @@
 apiVersion: batch/v1
 kind: Job
 metadata:
-  name: othrys-synapse-signingkey-ensure-2
+  name: othrys-synapse-signingkey-ensure-3
   namespace: comms
 spec:
   backoffLimit: 2
@@ -35,7 +35,7 @@ spec:
                 exit 0
               fi
               signing_key_b64="$(base64 /work/signing.key | tr -d '\n')"
-              payload="$(printf '{\"data\":{\"signing.key\":\"%s\"}}' "${signing_key_b64}")"
+              payload="$(printf '{"data":{"signing.key":"%s"}}' "${signing_key_b64}")"
               kubectl -n comms patch secret othrys-synapse-signingkey --type=merge -p "${payload}" >/dev/null
           volumeMounts:
             - name: work