Bump pylibmc from 1.6.2 to 1.6.3 (#9955)

Bumps [pylibmc](https://github.com/lericson/pylibmc) from 1.6.2 to 1.6.3.
- [Release notes](https://github.com/lericson/pylibmc/releases)
- [Changelog](https://github.com/lericson/pylibmc/blob/master/docs/changelog.rst)
- [Commits](lericson/pylibmc@1.6.2...1.6.3)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alessio Fabiani <alessio.fabiani@geosolutionsgroup.com>

Author: dependabot[bot]

requirements.txt

@@ -125,7 +125,7 @@ python-dateutil==2.8.2
 pytz==2022.2.1
 requests==2.28.1
 timeout-decorator==0.5.0
-pylibmc==1.6.2
+pylibmc==1.6.3
 sherlock==0.3.2
 
 # required by monitoring