chore(deps): lock to body-parser@1 for node 14, 16 support (#4900)

Refs: #4898

Author: trentm

.github/dependabot.yml

@@ -34,6 +34,8 @@ updates:
       - dependency-name: "lru-cache" # later [email protected] toyed with dropping 14.x, we pin to a specific early 10.x; lru-cache@11 dropped 14, 16, 18
       - dependency-name: "rimraf" # rimraf@5 min is 14.20, we need >=14.17; rimraf@6 dropped 14, 16, 18
         update-types: ["version-update:semver-major"]
+      - dependency-name: "body-parser" # body-parser@2 min is 18, we need >=14.17
+        update-types: ["version-update:semver-major"]
       # Packages whose newer versions are not supported by the agent
       - dependency-name: "koa-router" # support is >=5.2.0 <14.0.0
       - dependency-name: "redis" # support is >=2.0.0 <5