chore: Bump @actions/core from 1.5.0 to 1.6.0 (aws-actions#277)

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.5.0 to 1.6.0.
- [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)

---
updated-dependencies:
- dependency-name: "@actions/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

package.json

@@ -25,7 +25,7 @@
   },
   "homepage": "https://github.com/aws-actions/configure-aws-credentials#readme",
   "dependencies": {
-    "@actions/core": "^1.5.0",
+    "@actions/core": "^1.6.0",
     "aws-sdk": "^2.988.0",
     "axios": "^0.22.0"
   },