build(deps): bump debian from 10.10-slim to 11.0-slim

Bumps debian from 10.10-slim to 11.0-slim.

---
updated-dependencies:
- dependency-name: debian
  dependency-type: direct:production
...

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

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/debian:10.10-slim
+FROM docker.io/debian:11.0-slim
 
 ARG GITOLITE_PACKAGE_VERSION=3.6.11-2
 ARG GIT_ANNEX_PACKAGE_VERSION=7.20190129-3