Bump @actions/core from 1.2.4 to 1.2.6 (#14)

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.2.4 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>

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

Author: dependabot[bot]

package-lock.json

@@ -11,7 +11,7 @@
     "build": "spago bundle-module --to output/index.js && ncc build --minify update.js && mv dist/index.js dist/update.js && ncc build --minify index.js"
   },
   "dependencies": {
-    "@actions/core": "^1.2.4",
+    "@actions/core": "^1.2.6",
     "@actions/exec": "^1.0.4",
     "@actions/tool-cache": "^1.6.0",
     "xhr2": "^0.2.0"