Bump vitest from 2.0.5 to 2.1.9 in /ts-tests

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) from 2.0.5 to 2.1.9.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v2.1.9/packages/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ts-tests/package.json

@@ -15,7 +15,7 @@
 		"@polkadot/api": "12.4.1",
 		"ethereum-waffle": "4.0.10",
 		"ethers": "5.7.2",
-		"vitest": "^2.0.5"
+		"vitest": "^2.1.9"
 	},
 	"packageManager": "yarn@4.4.0"
 }