build(deps): bump charset-normalizer from 2.0.5 to 2.0.6

Bumps [charset-normalizer](https://github.com/ousret/charset_normalizer) from 2.0.5 to 2.0.6.
- [Release notes](https://github.com/ousret/charset_normalizer/releases)
- [Commits](jawah/charset_normalizer@2.0.5...2.0.6)

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

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

requirements-pinned.txt

@@ -1,6 +1,6 @@
 certifi==2021.5.30 # via requests
 cffi==1.14.6 # via cryptography, pynacl
-charset-normalizer==2.0.5 # via requests
+charset-normalizer==2.0.6 # via requests
 cryptography==3.4.8 # via securesystemslib
 idna==3.2 # via requests
 pycparser==2.20 # via cffi