Bump cspell from 5.3.7 to 5.3.8 (#6827)

Bumps [cspell](https://github.com/streetsidesoftware/cspell) from 5.3.7 to 5.3.8.
- [Release notes](https://github.com/streetsidesoftware/cspell/releases)
- [Changelog](https://github.com/streetsidesoftware/cspell/blob/master/CHANGELOG.md)
- [Commits](https://github.com/streetsidesoftware/cspell/compare/v5.3.7...v5.3.8)

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

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

package.json

@@ -125,7 +125,7 @@
     "codelyzer": "^6.0.1",
     "commander": "6.2.1",
     "concurrently": "^6.0.0",
-    "cspell": "^5.3.7",
+    "cspell": "^5.3.8",
     "css-loader": "^5.1.0",
     "dotenv": "^8.2.0",
     "github-api": "^3.4.0",