Bump @shopify/jest-koa-mocks from 5.3.0 to 5.3.1 in /functions

Bumps [@shopify/jest-koa-mocks](https://github.com/Shopify/quilt/tree/HEAD/packages/jest-koa-mocks) from 5.3.0 to 5.3.1.
- [Release notes](https://github.com/Shopify/quilt/releases)
- [Changelog](https://github.com/Shopify/quilt/blob/main/packages/jest-koa-mocks/CHANGELOG.md)
- [Commits](https://github.com/Shopify/quilt/commits/@shopify/[email protected]/packages/jest-koa-mocks)

---
updated-dependencies:
- dependency-name: "@shopify/jest-koa-mocks"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

functions/package.json

@@ -51,7 +51,7 @@
   },
   "devDependencies": {
     "@sentry/cli": "^2.36.6",
-    "@shopify/jest-koa-mocks": "^5.3.0",
+    "@shopify/jest-koa-mocks": "^5.3.1",
     "@types/jest": "^28.1.7",
     "@types/koa": "^2.15.0",
     "@types/koa-bodyparser": "^4.3.12",

functions/yarn.lock

@@ -1571,10 +1571,10 @@
   dependencies:
     "@sentry/types" "8.33.1"
 
-"@shopify/jest-koa-mocks@^5.3.0":
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/@shopify/jest-koa-mocks/-/jest-koa-mocks-5.3.0.tgz#0b9b6ce01a7ef945df7272aa08cda559c11b39f5"
-  integrity sha512-Yy9uS298/aWhT/bjfhUAcFRaq7pq7j0ybaI6U/vWQ5IcdWD3E73iqptkw+FNC+Z9cdV9QT8osFd0r0frFNb9Nw==
+"@shopify/jest-koa-mocks@^5.3.1":
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/@shopify/jest-koa-mocks/-/jest-koa-mocks-5.3.1.tgz#2526ce7612797c460533c4033b0ce9ce074237af"
+  integrity sha512-BRxgfXmV1jMYXGhiGJamta22YoEJxL94qrxyZ/aXg2gWHjDjF6zpNapTfCUNbHJwOW7/tzylkHs53ac8xTZBBw==
   dependencies:
     koa "^2.13.4"
     node-mocks-http "^1.11.0"