deps: env_logger update to 0.9

and removal from main crate, not needed there anymore.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>

debian/control

@@ -16,7 +16,7 @@ Build-Depends: debhelper (>= 12),
  librust-crossbeam-channel-0.5+default-dev,
  librust-endian-trait-0.6+arrays-dev,
  librust-endian-trait-0.6+default-dev,
- librust-env-logger-0.7+default-dev,
+ librust-env-logger-0.9+default-dev,
  librust-flate2-1+default-dev,
  librust-foreign-types-0.3+default-dev,
  librust-futures-0.3+default-dev,