chore(deps-dev): bump @types/yargs from 15.0.7 to 15.0.8 (projen#174)

Bumps [@types/yargs](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/yargs) from 15.0.7 to 15.0.8.
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a href="https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/yargs">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=@types/yargs&package-manager=npm_and_yarn&previous-version=15.0.7&new-version=15.0.8)](https://docs.github.com/en/github/managing-security-vulnerabilities/configuring-github-dependabot-security-updates)

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually


</details>

yarn.lock

@@ -703,9 +703,9 @@
   integrity sha512-FA/BWv8t8ZWJ+gEOnLLd8ygxH/2UFbAvgEonyfN6yWGLKc7zVjbpl2Y4CTjid9h2RfgPP6SEt6uHwEOply00yw==
 
 "@types/yargs@^15.0.0", "@types/yargs@^15.0.7":
-  version "15.0.7"
-  resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-15.0.7.tgz#dad50a7a234a35ef9460737a56024287a3de1d2b"
-  integrity sha512-Gf4u3EjaPNcC9cTu4/j2oN14nSVhr8PQ+BvBcBQHAhDZfl0bVIiLgvnRXv/dn58XhTm9UXvBpvJpDlwV65QxOA==
+  version "15.0.8"
+  resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-15.0.8.tgz#7644904cad7427eb704331ea9bf1ee5499b82e23"
+  integrity sha512-b0BYzFUzBpOhPjpl1wtAHU994jBeKF4TKVlT7ssFv44T617XNcPdRoG4AzHLVshLzlrF7i3lTelH7UbuNYV58Q==
   dependencies:
     "@types/yargs-parser" "*"