Pro Custodibus Agent 1.7.5

Fixed
-----

* Fixed reading WireGuard config files on Windows when the interface
  name contained a dot (`.`).
* Fixed the following error when running extras scripts on a system
  using the mawk version of awk:
  ```
  awk: line 3: regular expression compile failed (missing operand)
  ```
* Relaxed minimum required dnspython module version to support older
  versions of Python.