Bump typescript from 3.8.3 to 3.9.7 (#120)

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

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

package-lock.json

@@ -8521,9 +8521,9 @@
       }
     },
     "typescript": {
-      "version": "3.8.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
-      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "version": "3.9.7",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.7.tgz",
+      "integrity": "sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==",
       "dev": true
     },
     "union-value": {

package.json

@@ -44,6 +44,6 @@
     "js-yaml": "^3.13.1",
     "prettier": "^1.19.1",
     "ts-jest": "^24.2.0",
-    "typescript": "^3.6.4"
+    "typescript": "^3.9.7"
   }
 }