chore(deps-dev): bump @types/jest from 26.0.19 to 26.0.20

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 26.0.19 to 26.0.20.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/jest)

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

yarn.lock

@@ -980,9 +980,9 @@
     "@types/istanbul-lib-report" "*"
 
 "@types/jest@26.x", "@types/jest@^26.0.18":
-  version "26.0.19"
-  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.19.tgz#e6fa1e3def5842ec85045bd5210e9bb8289de790"
-  integrity sha512-jqHoirTG61fee6v6rwbnEuKhpSKih0tuhqeFbCmMmErhtu3BYlOZaXWjffgOstMM4S/3iQD31lI5bGLTrs97yQ==
+  version "26.0.20"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.20.tgz#cd2f2702ecf69e86b586e1f5223a60e454056307"
+  integrity sha512-9zi2Y+5USJRxd0FsahERhBwlcvFh6D2GLQnY2FH2BzK8J9s9omvNHIbvABwIluXa0fD8XVKMLTO0aOEuUfACAA==
   dependencies:
     jest-diff "^26.0.0"
     pretty-format "^26.0.0"