Bumps debian from 10.8-slim to 10.9-slim. Signed-off-by: dependabot[bot] <support@github.com>
@@ -1,4 +1,4 @@
-FROM docker.io/debian:10.8-slim
+FROM docker.io/debian:10.9-slim
ARG GITOLITE_PACKAGE_VERSION=3.6.11-2
ARG GIT_ANNEX_PACKAGE_VERSION=7.20190129-3