Bump @types/jest from 26.0.15 to 26.0.19

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 26.0.15 to 26.0.19.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/jest)

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

package.json

@@ -24,7 +24,7 @@
   "dependencies": {
     "@actions/core": "^1.2.6",
     "@actions/exec": "^1.0.4",
-    "@types/jest": "^26.0.15",
+    "@types/jest": "^26.0.19",
     "@zeit/ncc": "^0.22.3",
     "fs": "0.0.1-security",
     "jest": "^26.6.3",