Bump yaml from 2.8.4 to 2.9.0

Bumps [yaml](https://github.com/eemeli/yaml) from 2.8.4 to 2.9.0.
- [Release notes](https://github.com/eemeli/yaml/releases)
- [Commits](eemeli/yaml@v2.8.4...v2.9.0)

---
updated-dependencies:
- dependency-name: yaml
  dependency-version: 2.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -191,7 +191,7 @@
 		"xterm-addon-web-links": "^0.9.0",
 		"xterm-addon-webgl": "^0.16.0",
 		"xterm-headless": "^5.3.0",
-		"yaml": "^2.8.4"
+		"yaml": "^2.9.0"
 	},
 	"overrides": {
 		"cookie": "^1.1.1",