Bump node-fetch and @types/node-fetch (#559)

Bumps [node-fetch](https://github.com/node-fetch/node-fetch) and [@types/node-fetch](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node-fetch). These dependencies needed to be updated together.

Updates `node-fetch` from 2.6.12 to 2.7.0
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Commits](node-fetch/node-fetch@v2.6.12...v2.7.0)

Updates `@types/node-fetch` from 2.6.4 to 2.6.10
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node-fetch)

---
updated-dependencies:
- dependency-name: node-fetch
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: "@types/node-fetch"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -39,10 +39,10 @@
     "@actions/tool-cache": "^2.0.1",
     "@octokit/auth-app": "^6.0.3",
     "@octokit/request": "^8.1.1",
-    "@types/node-fetch": "^2.6.4",
+    "@types/node-fetch": "^2.6.11",
     "@types/sinon": "^17.0.2",
     "jssha": "^3.3.1",
-    "node-fetch": "^2.6.12"
+    "node-fetch": "^2.7.0"
   },
   "devDependencies": {
     "@ava/typescript": "^4.1.0",