Update dependency cachelib to v0.4.1 (#77)

Author: renovate[bot]

requirements.txt

@@ -1,5 +1,5 @@
 brotli==1.0.9; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.3.0"
-cachelib==0.1.1
+cachelib==0.4.1
 click==7.1.2; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0"
 dash-core-components==1.14.1
 dash-html-components==1.1.1