chore: add the new aws-iot-actions module to the assignment GitHub Action (aws#17259)

We've created a new module in aws#17112, so now we need to add it to our assignment GitHub Action.

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: skinny85

.github/workflows/issue-label-assign.yml

@@ -126,6 +126,7 @@ jobs:
            {"area":"@aws-cdk/aws-imagebuilder","keywords":["aws-imagebuilder","imagebuilder"],"labels":["@aws-cdk/aws-imagebuilder"],"assignees":["skinny85"]},
            {"area":"@aws-cdk/aws-inspector","keywords":["aws-inspector","inspector"],"labels":["@aws-cdk/aws-inspector"],"assignees":["skinny85"]},
            {"area":"@aws-cdk/aws-iot","keywords":["internet-of-things","aws-iot","iot"],"labels":["@aws-cdk/aws-iot"],"assignees":["skinny85"]},
+           {"area":"@aws-cdk/aws-iot-actions","keywords":["aws-iot-actions","iot-actions",],"labels":["@aws-cdk/aws-iot-actions"],"assignees":["skinny85"]},
            {"area":"@aws-cdk/aws-iot1click","keywords":["aws-iot1click","iot1click"],"labels":["@aws-cdk/aws-iot1click"],"assignees":["skinny85"]},
            {"area":"@aws-cdk/aws-iotanalytics","keywords":["aws-iotanalytics","iotanalytics"],"labels":["@aws-cdk/aws-iotanalytics"],"assignees":["skinny85"]},
            {"area":"@aws-cdk/aws-iotevents","keywords":["aws-iotevents","iotevents"],"labels":["@aws-cdk/aws-iotevents"],"assignees":["skinny85"]},