Commits on Jul 17, 2024

1. Fix regex warnings by removing extra escapes '\' not needed …

   On Ubuntu 24.04 with Python 3.12 two regexes showed the warning about
   invalid escape sequences:
   
   ```
   aptly/publisher/__init__.py:179: SyntaxWarning: invalid escape sequence '\}'
     nodes_raw = re.findall('[ \t]+"([^"]+)".*label="{(Repo|Snapshot|Published) ([^|]+)[^\}"]+}"', dot_data)
   aptly/publisher/__init__.py:591: SyntaxWarning: invalid escape sequence '\ '
     parsed = re.match('(.*)\ (.*)\ (.*)\ (.*)', ref)
   ```
   
   Fix those regexes by removing the not needed escapes `\`.
   - the `}` inside the `[]` grouping doesn't need to be escaped
     - from: https://docs.python.org/3/howto/regex.html#matching-characters
     - Metacharacters (except `\`) are not active inside classes.
       For example, `[akm$]` will match any of the characters 'a', 'k', 'm', or '$';
       '$' is usually a metacharacter, but inside a character class it’s stripped of its special nature.
   - the space character ` ` doesn't need to be escaped
   
   Tested on Ubuntu 18.04, 20.04, 22.04 and 24.04 with the `cleanup`
   command (which uses the first regex) and the `dump` command
   (which uses the second regex)
   
   ```sh
   python3 -m aptly.publisher -v --url http://example.com/aptly cleanup
   python3 -m aptly.publisher -v --url http://example.com/aptly dump --publish "all"
   ```
   
   Fixes: tcpcloud#33

   

   NeroBurner committed Jul 17, 2024
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