Jordan Petridis e436f87ea2 launcher: Fix ambigious python strings
```
gst-devtools/validate/launcher/baseclasses.py:2399: SyntaxWarning: invalid escape sequence '\.'
  if re.findall("%s\..*\.%s$" % (re.escape(mfile_bname), self.FILE_EXTENSION), f):
gst-devtools/validate/launcher/apps/gstvalidate.py:1354: SyntaxWarning: invalid escape sequence '\.'
  ("file\.transcode.*mxf",
```

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5541>
2023-11-11 12:47:12 +00:00
..
2023-07-16 19:10:03 +00:00
2023-01-23 19:41:07 +00:00
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