build(deps): bump @actions/core from 1.2.5 to 1.2.6 (#96)

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.2.5 to 1.2.6.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/core/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/core)

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Xiang Dai <long0dai@foxmail.com>
Co-authored-by: Xiang Dai <long0dai@foxmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -26,7 +26,7 @@
   "license": "MIT",
   "dependencies": {
     "@actions/cache": "^1.0.2",
-    "@actions/core": "^1.2.5",
+    "@actions/core": "^1.2.6",
     "@actions/exec": "^1.0.1",
     "@actions/github": "^4.0.0",
     "@actions/tool-cache": "^1.6.0",