Bump cachecontrol from 0.12.10 to 0.12.11

Bumps [cachecontrol](https://github.com/ionrock/cachecontrol) from 0.12.10 to 0.12.11.
- [Release notes](https://github.com/ionrock/cachecontrol/releases)
- [Changelog](https://github.com/ionrock/cachecontrol/blob/master/docs/release_notes.rst)
- [Commits](psf/cachecontrol@v0.12.10...v0.12.11)

---
updated-dependencies:
- dependency-name: cachecontrol
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 ruamel.yaml>= 0.12.4, != 0.16.6, < 0.18
 rdflib>= 4.2.2, < 7.0.0
 mistune>=0.8.1,<0.9
-CacheControl==0.12.10
+CacheControl==0.12.11
 lockfile==0.12.2  # needed for CacheControl's FileCache
 black