Bump @actions/tool-cache from 1.5.5 to 1.6.0

Bumps [@actions/tool-cache](https://github.com/actions/toolkit/tree/HEAD/packages/tool-cache) from 1.5.5 to 1.6.0.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/master/packages/tool-cache/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/tool-cache)

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

package.json

@@ -23,7 +23,7 @@
     "@actions/core": "^1.2.4",
     "@actions/exec": "^1.0.4",
     "@actions/http-client": "^1.0.8",
-    "@actions/tool-cache": "^1.5.5"
+    "@actions/tool-cache": "^1.6.0"
   },
   "devDependencies": {
     "@types/jest": "^26.0.0",