build(deps-dev): bump typescript from 4.0.7 to 4.0.8

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.0.7 to 4.0.8.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.0.7...v4.0.8)

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

Author: dependabot-preview[bot]

package.json

@@ -44,6 +44,6 @@
     "node-sass": "4.14.1",
     "shx": "^0.3.3",
     "tslint": "6.1.2",
-    "typescript": "~4.0.7"
+    "typescript": "~4.0.8"
   }
 }

yarn.lock

@@ -9855,10 +9855,10 @@ typescript@4.0.5:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.5.tgz#ae9dddfd1069f1cb5beb3ef3b2170dd7c1332389"
   integrity sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==
 
-typescript@~4.0.7:
-  version "4.0.7"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.7.tgz#7168032c43d2a2671c95c07812f69523c79590af"
-  integrity sha512-yi7M4y74SWvYbnazbn8/bmJmX4Zlej39ZOqwG/8dut/MYoSQ119GY9ZFbbGsD4PFZYWxqik/XsP3vk3+W5H3og==
+typescript@~4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.8.tgz#5739105541db80a971fdbd0d56511d1a6f17d37f"
+  integrity sha512-oz1765PN+imfz1MlZzSZPtC/tqcwsCyIYA8L47EkRnRW97ztRk83SzMiWLrnChC0vqoYxSU1fcFUDA5gV/ZiPg==
 
 unicode-canonical-property-names-ecmascript@^1.0.4:
   version "1.0.4"