Upgrade tool-cache to 1.6.0

Author: fwal

package-lock.json

@@ -34,7 +34,7 @@
     "@actions/core": "^1.2.4",
     "@actions/exec": "^1.0.4",
     "@actions/io": "^1.0.2",
-    "@actions/tool-cache": "^1.5.5",
+    "@actions/tool-cache": "^1.6.0",
     "getos": "^3.2.1",
     "semver": "^7.3.2"
   },