chore(deps): bump koa from 2.15.3 to 2.15.4 (#3514)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

packages/dts-plugin/package.json

@@ -60,7 +60,7 @@
     "chalk": "3.0.0",
     "fs-extra": "9.1.0",
     "isomorphic-ws": "5.0.0",
-    "koa": "2.15.3",
+    "koa": "2.15.4",
     "log4js": "6.9.1",
     "node-schedule": "2.1.1",
     "ws": "8.18.0"