chore(deps-dev): bump typescript from 4.8.4 to 4.9.4

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.8.4 to 4.9.4.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.8.4...v4.9.4)

---
updated-dependencies:
- dependency-name: typescript
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -128,7 +128,7 @@
     "terser": "^5.15.0",
     "ts-jest": "^29.0.1",
     "ts-json-schema-generator": "^1.1.1",
-    "typescript": "~4.8.3",
+    "typescript": "~4.9.4",
     "vega-cli": "^5.22.1",
     "vega-datasets": "~2.5.1",
     "vega-embed": "^6.21.0",

yarn.lock

@@ -7855,6 +7855,11 @@ typescript@~4.8.3:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.8.4.tgz#c464abca159669597be5f96b8943500b238e60e6"
   integrity sha512-QCh+85mCy+h0IGff8r5XWzOVSbBO+KfeYrMQh7NJ58QujwcE22u+NUSmUxqF+un70P9GXKxa2HCNiTTMJknyjQ==
 
+typescript@~4.9.4:
+  version "4.9.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.4.tgz#a2a3d2756c079abda241d75f149df9d561091e78"
+  integrity sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==
+
 typical@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/typical/-/typical-4.0.0.tgz#cbeaff3b9d7ae1e2bbfaf5a4e6f11eccfde94fc4"