chore(deps): update dependency graphql-http to v1.18.0 (#7509)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [graphql-http](https://togithub.com/graphql/graphql-http) | [`1.17.1`
->
`1.18.0`](https://renovatebot.com/diffs/npm/graphql-http/1.17.1/1.18.0)
|
[![age](https://badges.renovateapi.com/packages/npm/graphql-http/1.18.0/age-slim)](https://docs.renovatebot.com/merge-confidence/)
|
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|
[![passing](https://badges.renovateapi.com/packages/npm/graphql-http/1.18.0/compatibility-slim/1.17.1)](https://docs.renovatebot.com/merge-confidence/)
|
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---

### Release Notes

<details>
<summary>graphql/graphql-http</summary>

###
[`v1.18.0`](https://togithub.com/graphql/graphql-http/blob/HEAD/CHANGELOG.md#&#8203;1180-httpsgithubcomgraphqlgraphql-httpcomparev1171v1180-2023-04-14)

[Compare
Source](https://togithub.com/graphql/graphql-http/compare/v1.17.1...v1.18.0)

##### Bug Fixes

- **audits/server:** Avoid auditing non well-formatted GraphQL-over-HTTP
requests
([#&#8203;62](https://togithub.com/graphql/graphql-http/issues/62))
([d72e344](https://togithub.com/graphql/graphql-http/commit/d72e3444a719c0a9710b8a96201f3cc3d9324ffb))
- **audits/server:** Prefer using POST
([#&#8203;77](https://togithub.com/graphql/graphql-http/issues/77))
([8cd7dfb](https://togithub.com/graphql/graphql-http/commit/8cd7dfb2e571e7660839681a796ab98fe82f652a))
- **handler:** Stringify errors by exposing only the message
([cabf8a9](https://togithub.com/graphql/graphql-http/commit/cabf8a98b7e266af15b3e6da1b5d874e8d43a238))

##### Features

- **audits:** Notices section for optional recommendations
([#&#8203;76](https://togithub.com/graphql/graphql-http/issues/76))
([b8bdc71](https://togithub.com/graphql/graphql-http/commit/b8bdc71811a5d21a3f8a60b61f61ddf5ee3445ce))
- **handler:** Error formatter function
([#&#8203;78](https://togithub.com/graphql/graphql-http/issues/78))
([c0eaeb4](https://togithub.com/graphql/graphql-http/commit/c0eaeb4595abc9d13b624d71a8b72ff22298b706))

####
[1.17.1](https://togithub.com/graphql/graphql-http/compare/v1.17.0...v1.17.1)
(2023-03-31)

##### Bug Fixes

- Add file extensions to imports/exports in ESM type definitions
([d084a8d](https://togithub.com/graphql/graphql-http/commit/d084a8d8e83ac65c8fbc07322ca37a2bea8ac372)),
closes [#&#8203;70](https://togithub.com/graphql/graphql-http/issues/70)
- **audits/server:** Better "must accept UTF-8" test with emoji
([#&#8203;69](https://togithub.com/graphql/graphql-http/issues/69))
([a322d2c](https://togithub.com/graphql/graphql-http/commit/a322d2c5f457e864ef303a08e8067d65b828f7d2))

</details>

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.changeset/dirty-seals-breathe.md

@@ -0,0 +1,5 @@
+---
+'@apollo/server-integration-testsuite': patch
+---
+
+Update `graphql-http` dependency

packages/integration-testsuite/package.json

@@ -36,7 +36,7 @@
     "@josephg/resolvable": "^1.0.1",
     "body-parser": "^1.20.0",
     "express": "^4.18.1",
-    "graphql-http": "1.17.1",
+    "graphql-http": "1.18.0",
     "graphql-tag": "^2.12.6",
     "loglevel": "^1.8.0",
     "node-fetch": "^2.6.7",