Bump python-debian from 0.1.36ubuntu1 to 0.1.49

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

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

requirements.txt

@@ -43,7 +43,7 @@ pyOpenSSL==19.0.0
 pyrsistent==0.15.5
 pyserial==3.4
 python-apt==2.0.0
-python-debian===0.1.36ubuntu1
+python-debian===0.1.49
 PyYAML==5.3.1
 requests==2.22.0
 requests-unixsocket==0.2.0