Bump the non-breaking-changes group across 1 directory with 2 updates

Bumps the non-breaking-changes group with 2 updates in the / directory: [@actions/artifact](https://github.com/actions/toolkit/tree/HEAD/packages/artifact) and [undici](https://github.com/nodejs/undici).


Updates `@actions/artifact` from 2.1.8 to 2.1.9
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/artifact/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/artifact)

Updates `undici` from 6.19.2 to 6.19.8
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.19.2...v6.19.8)

---
updated-dependencies:
- dependency-name: "@actions/artifact"
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: non-breaking-changes
- dependency-name: undici
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: non-breaking-changes
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -4,7 +4,7 @@
   "description": "Deploy an actions artifact to GitHub Pages",
   "main": "./dist/index.js",
   "dependencies": {
-    "@actions/artifact": "^2.1.8",
+    "@actions/artifact": "^2.1.9",
     "@actions/core": "^1.10.1",
     "@actions/github": "^6.0.0",
     "@octokit/request-error": "^5.0.1",
@@ -19,7 +19,7 @@
     "make-coverage-badge": "^1.2.0",
     "nock": "^13.5.4",
     "prettier": "^3.3.3",
-    "undici": "^6.19.2"
+    "undici": "^6.19.8"
   },
   "scripts": {
     "all": "npm run format && npm run lint && npm run prepare && npm run test && npm run coverage-badge",