swh-search build is ko

The swh-search build is ko since the 8th of January

On the swh-search build:

07:06:21  ERROR: Some build dependencies for file:///var/lib/jenkins/workspace/DSEA/tests/.tox/.tmp/package/1/swh.search-0.11.7.dev5%2Bg50fedaf.zip conflict with the backend dependencies: tree-sitter==0.20.0 is incompatible with tree-sitter==0.19.0.

On the swh-environment build (failiing too due to swh-search):

4:12:06 
14:12:06 filename = '/home/jenkins/workspace/DENV/tests/swh-search/swh/search/query_language/src/parser.c'
14:12:06 
14:12:06     def getmtime(filename):
14:12:06         """Return the last modification time of a file, reported by os.stat()."""
14:12:06 >       return os.stat(filename).st_mtime
14:12:06 E       FileNotFoundError: [Errno 2] No such file or directory: '/home/jenkins/workspace/DENV/tests/swh-search/swh/search/query_language/src/parser.c'
14:12:06 
14:12:06 /usr/lib/python3.7/genericpath.py:55: FileNotFoundError

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Migrated from T3838 (view on Phabricator)