Bump pylint from 2.17.5 to 2.17.6

Bumps [pylint](https://github.com/pylint-dev/pylint) from 2.17.5 to 2.17.6.
- [Release notes](https://github.com/pylint-dev/pylint/releases)
- [Commits](pylint-dev/pylint@v2.17.5...v2.17.6)

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

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

requirements/lint.txt

@@ -13,7 +13,7 @@ amqp==5.1.1
     #   -r requirements/requirements.txt
     #   -r requirements/tests.txt
     #   kombu
-astroid==2.15.6
+astroid==2.15.7
     # via pylint
 attrs==21.4.0
     # via
@@ -281,7 +281,7 @@ pyjwt==2.4.0
     #   -r requirements/requirements.txt
     #   -r requirements/tests.txt
     #   pyramid-googleauth
-pylint==2.17.5
+pylint==2.17.6
     # via -r requirements/lint.in
 pyramid==2.0.2
     # via