Bump @grpc/grpc-js from 1.9.13 to 1.9.15

Bumps [@grpc/grpc-js](https://github.com/grpc/grpc-node) from 1.9.13 to 1.9.15.
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/compare/@grpc/[email protected]...@grpc/[email protected])

---
updated-dependencies:
- dependency-name: "@grpc/grpc-js"
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

yarn.lock

@@ -5151,12 +5151,12 @@ __metadata:
   linkType: hard
 
 "@grpc/grpc-js@npm:~1.9.6":
-  version: 1.9.13
-  resolution: "@grpc/grpc-js@npm:1.9.13"
+  version: 1.9.15
+  resolution: "@grpc/grpc-js@npm:1.9.15"
   dependencies:
     "@grpc/proto-loader": "npm:^0.7.8"
     "@types/node": "npm:>=12.12.47"
-  checksum: 5a2e5f88fa684e03bbfd13d5e0dffd1ea4eaacc87220bad76f758e85abb12668c1e44656fb2379f88a446f463932087463c8f0715db4f1b1747354fd4beeaa4f
+  checksum: 5bd40e1b886df238f8ffe4cab694ceb51250f94ede7da6f94233b4d9a2526a4e525aafbc8f319850c2d8126c189232be458991768877b2af441f0234fb4b4292
   languageName: node
   linkType: hard