chore: re-enable instrumentation-fastify unit test on node@18 (#1568)

Co-authored-by: Marc Pichler <[email protected]>

Author: chigia001

.github/workflows/unit-test.yml

@@ -14,7 +14,6 @@ jobs:
           - node: "18"
             lerna-extra-args: >-
               --ignore @opentelemetry/resource-detector-alibaba-cloud
-              --ignore @opentelemetry/instrumentation-fastify
               --ignore @opentelemetry/instrumentation-restify
     runs-on: ubuntu-latest
     services: