Bump graphql from 15.6.0 to 15.8.0 (#49)

Bumps [graphql](https://github.com/graphql/graphql-js) from 15.6.0 to 15.8.0.
- [Release notes](https://github.com/graphql/graphql-js/releases)
- [Commits](graphql/graphql-js@v15.6.0...v15.8.0)

---
updated-dependencies:
- dependency-name: graphql
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

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

package.json

@@ -27,7 +27,7 @@
   "license": "MIT",
   "dependencies": {
     "@actions/core": "^1.6.0",
-    "graphql": "^15.6.0",
+    "graphql": "^15.8.0",
     "graphql-request": "^3.5.0"
   },
   "devDependencies": {

yarn.lock

@@ -2811,9 +2811,9 @@ graphql-ws@^5.0.0:
   version "5.3.0"
   resolved "https://registry.npmjs.org/graphql-ws/-/graphql-ws-5.3.0.tgz"
 
-graphql@^15.6.0:
-  version "15.6.0"
-  resolved "https://registry.yarnpkg.com/graphql/-/graphql-15.6.0.tgz#e69323c6a9780a1a4b9ddf7e35ca8904bb04df02"
+graphql@^15.8.0:
+  version "15.8.0"
+  resolved "https://registry.yarnpkg.com/graphql/-/graphql-15.8.0.tgz#33410e96b012fa3bdb1091cc99a94769db212b38"
 
 has-ansi@^2.0.0:
   version "2.0.0"