build(deps): bump alpine from 3.13.2 to 3.13.3

Bumps alpine from 3.13.2 to 3.13.3.

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

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/alpine:3.13.2
+FROM docker.io/alpine:3.13.3
 
 ARG GETTEXT_PACKAGE_VERSION=0.20.2-r2
 ARG TOR_PACKAGE_VERSION=0.4.4.7-r1