chore(deps-dev): bump express (#7)

Automatic merge of Dependabot PR

Author: dependabot[bot]

plugins/node/opentelemetry-instrumentation-express/package.json

@@ -54,7 +54,7 @@
     "@opentelemetry/sdk-trace-node": "^1.3.1",
     "@types/mocha": "7.0.2",
     "@types/node": "16.11.21",
-    "express": "4.17.1",
+    "express": "4.20.0",
     "gts": "3.1.0",
     "mocha": "7.2.0",
     "nyc": "15.1.0",