add entry for instr-kafkajs so the label-prs.yml workflow will automatically add the pkg:instrumentation-kafkajs label (required for TAV testing PRs)

Author: trentm

.github/component-label-map.yml

@@ -131,6 +131,11 @@ pkg:instrumentation-ioredis:
           - plugins/node/opentelemetry-instrumentation-ioredis/**
           - packages/opentelemetry-test-utils/**
           - packages/opentelemetry-redis-common/**
+pkg:instrumentation-kafkajs:
+  - changed-files:
+      - any-glob-to-any-file:
+          - plugins/node/instrumentation-kafkajs/**
+          - packages/opentelemetry-test-utils/**
 pkg:instrumentation-knex:
   - changed-files:
       - any-glob-to-any-file: