build(deps): bump @tootallnate/once (#8349)

Bumps [@tootallnate/once](https://github.com/TooTallNate/once) from 2.0.0 to 2.0.1.
- [Release notes](https://github.com/TooTallNate/once/releases)
- [Changelog](https://github.com/TooTallNate/once/blob/v2.0.1/CHANGELOG.md)
- [Commits](TooTallNate/once@2.0.0...v2.0.1)

---
updated-dependencies:
- dependency-name: "@tootallnate/once"
  dependency-version: 2.0.1
  dependency-type: indirect
...

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Author: dependabot[bot]

core/generator/gapic-generator-typescript/package-lock.json

@@ -523,9 +523,9 @@
   integrity sha512-oOAWABowe8EAbMyWKM0tYDKi8Yaox52D+HWZhAIJqQXbqe0xI/GV7FhLWqlEKreMkfDjshR5FKgi3mnle0h6Eg==
 
 "@tootallnate/once@2":
-  version "2.0.0"
-  resolved "https://registry.npmjs.org/@tootallnate/once/-/once-2.0.0.tgz"
-  integrity sha512-XCuKFP5PS55gnMVu3dty8KPatLqUoy/ZYzDzAGCQ8JNFCkLXzmI7vNHCR+XpbZaMWQK/vQubr7PkYq8g470J/A==
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-2.0.1.tgz#35adc6222e3662fa2222ce123b961476a746b9ea"
+  integrity sha512-HqmEUIGRJ5fSXchkVgR5F7qn48bDBzv0kWj/Kfu5e6uci4UlEeng4331LnBkWffb++Ei3FOVLxo8JJWMFBDMeQ==
 
 "@tsconfig/node10@^1.0.7":
   version "1.0.11"