deps: bump typescript from 3.9.6 to 3.9.7 (#268)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.6 to 3.9.7.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.6...v3.9.7)

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

package.json

@@ -68,6 +68,6 @@
     "prettier": "2.0.5",
     "standard-version": "^8.0.2",
     "ts-jest": "^25.5.1",
-    "typescript": "^3.9.6"
+    "typescript": "^3.9.7"
   }
 }