Bump @rsbuild/core from 1.2.5 to 1.2.8 in the rsbuild group (#851)

Bumps the rsbuild group with 1 update: [@rsbuild/core](https://github.com/web-infra-dev/rsbuild/tree/HEAD/packages/core).


Updates `@rsbuild/core` from 1.2.5 to 1.2.8
- [Release notes](https://github.com/web-infra-dev/rsbuild/releases)
- [Commits](https://github.com/web-infra-dev/rsbuild/commits/v1.2.8/packages/core)

---
updated-dependencies:
- dependency-name: "@rsbuild/core"
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: rsbuild
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -8,7 +8,7 @@
     "@emotion/styled": "^11.14.0",
     "@mui/icons-material": "^6.4.4",
     "@mui/material": "^6.1.3",
-    "@rsbuild/core": "^1.2.5",
+    "@rsbuild/core": "^1.2.8",
     "@rsbuild/plugin-react": "^1.1.0",
     "@types/file-saver": "^2.0.7",
     "@types/jest": "^29.5.14",