Bump jest from 25.5.4 to 26.6.3 (#606)

Bumps [jest](https://github.com/facebook/jest) from 25.5.4 to 26.6.3.
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/jest/compare/v25.5.4...v26.6.3)

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

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

package.json

@@ -45,7 +45,7 @@
     "eslint-plugin-github": "4.1.1",
     "eslint-plugin-jest": "24.1.3",
     "eslint-plugin-prettier": "^3.1.2",
-    "jest": "25.5.4",
+    "jest": "26.6.3",
     "jest-circus": "26.6.3",
     "prettier": "2.2.1",
     "rimraf": "^3.0.2",