chore: update autolabeler (#18206)

----

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

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

@@ -18,13 +18,14 @@ jobs:
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
           excluded-expressions: "[CDK CLI Version|TypeScript|Java|Python]"
+          area-is-keyword: true
           parameters: >
            [
            {"area":"package/tools","keywords":["cli","command line","init","synth","diff","bootstrap"],"labels":["package/tools"],"assignees":["rix0rrr"]},
            {"area":"@aws-cdk/alexa-ask","keywords":["alexa-ask","alexa", "cfnskill"],"labels":["@aws-cdk/alexa-ask"],"assignees":["madeline-k"]},
            {"area":"@aws-cdk/app-delivery","keywords":["app-delivery","PipelineDeployStackAction"],"labels":["@aws-cdk/app-delivery"],"assignees":["skinny85"]},
-           {"area":"@aws-cdk/assert","keywords":["assert", "@aws-cdk/assert"],"labels":["@aws-cdk/assert"],"assignees":["kaizen3031593"]},
-           {"area":"@aws-cdk/assertions","keywords":["assertions", "@aws-cdk/assertions"],"labels":["@aws-cdk/assertions"],"assignees":["kaizen3031593"]},
+           {"area":"@aws-cdk/assert","keywords":["assert"],"labels":["@aws-cdk/assert"],"assignees":["kaizen3031593"]},
+           {"area":"@aws-cdk/assertions","keywords":["assertions"],"labels":["@aws-cdk/assertions"],"assignees":["kaizen3031593"]},
            {"area":"@aws-cdk/assets","keywords":["assets","staging"],"labels":["@aws-cdk/assets"],"assignees":["eladb"]},
            {"area":"@aws-cdk/aws-accessanalyzer","keywords":["aws-accessanalyzer","accessanalyzer","cfnanalyzer"],"labels":["@aws-cdk/aws-accessanalyzer"],"assignees":["skinny85"]},
            {"area":"@aws-cdk/aws-acmpca","keywords":["aws-acmpca","acmpca","certificateauthority"],"labels":["@aws-cdk/aws-acmpca"],"assignees":["skinny85"]},