Fix typo in jsonnet dependency upgrade GH actions

Replace `commiter` to `committer`.

Refer https://github.com/peter-evans/create-pull-request#action-inputs

 for more
info about supported input properties for `peter-evans/create-pull-request@v3`.

Signed-off-by: Arunprasad Rajkumar <arajkuma@redhat.com>

.github/workflows/versions.yaml

@@ -70,7 +70,7 @@ jobs:
 
           ```
         team-reviewers: kube-prometheus-reviewers
-        commiter: Prometheus Operator Bot <prom-op-bot@users.noreply.github.com>
+        committer: Prometheus Operator Bot <prom-op-bot@users.noreply.github.com>
         author: Prometheus Operator Bot <prom-op-bot@users.noreply.github.com>
         branch: automated-updates-${{ matrix.branch }}
         delete-branch: true