build(deps-dev): bump typescript from 3.8.3 to 3.9.7 (#764)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.8.3 to 3.9.7.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.8.3...v3.9.7)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -62,7 +62,7 @@
     "rollup": "^2.23.0",
     "rollup-plugin-typescript2": "^0.27.1",
     "ts-jest": "^25.5.1",
-    "typescript": "~3.8.3"
+    "typescript": "~3.9.7"
   },
   "engines": {
     "node": "10.* || >= 12.*"

yarn.lock

@@ -13047,10 +13047,10 @@ typedarray@^0.0.6, typedarray@~0.0.5:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@~3.8.3:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
-  integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==
+typescript@~3.9.7:
+  version "3.9.7"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
+  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
 
 uc.micro@^1.0.1:
   version "1.0.3"