Bug 1635809 - Prevent crash in converter.py on debug output with non-ascii hg log data. r=kvark

This is just in debug output, so the fact that we ignore non-utf-8 chars is ok.

Depends on D74064

Differential Revision: https://phabricator.services.mozilla.com/D74065

tools/github-sync/converter.py

@@ -398,7 +398,7 @@ if DEBUG:
          '-r', 'descendants(' + base_hg_rev + ')',
          '--template', '{node} {desc|firstline}\\n'])
     for line in output.splitlines():
-        eprint(str(line, "ascii"))
+        eprint(line.decode('utf-8', 'ignore'))
 
 # Also flag any changes that touch the project
 query = '(' + wider_range + ') & modifies("glob:' + relative_path + '/**")'