analyser_merge_shop_FR fails downloading Sirene data

[jccomputing]

For about one week, the merge_shop_FR analyzer is failing because it can't dowload data. For example:

https://buildbot.osmose.openstreetmap.fr/#/builders/528/builds/1443

2024-10-01 03:11:36 france_alsace_bas_rhin : merge_shop_FR
2024-10-01 03:11:39   error: error on analyse merge_shop_FR...
2024-10-01 03:11:39     Traceback (most recent call last):
2024-10-01 03:11:39       File "/data/project/osmose/backend/./osmose_run.py", line 259, in execc
2024-10-01 03:11:39         if analyser_obj.timestamp() and remote_timestamp and analyser_obj.timestamp() <= remote_timestamp and analyser_obj.analyser_version() == remote_analyser_version:
2024-10-01 03:11:39            ^^^^^^^^^^^^^^^^^^^^^^^^
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge_Dynamic.py", line 51, in timestamp
2024-10-01 03:11:39         with self.analysers[0](self.config, self.error_file,  self.logger) as analyser_obj:
2024-10-01 03:11:39              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge_Dynamic.py", line 32, in __init__
2024-10-01 03:11:39         classs.__init__(self, config, error_file, logger, *args)
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/analyser_merge_shop_FR.py", line 56, in __init__
2024-10-01 03:11:39         self.init(
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge_Dynamic.py", line 67, in init
2024-10-01 03:11:39         Analyser_Merge_Point.init(self, url, name, source, load, mapping)
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 1414, in init
2024-10-01 03:11:39         super().init(url, name, parser, load, conflate)
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 1255, in init
2024-10-01 03:11:39         self.conflate.mapping.eval_static(self)
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 1165, in eval_static
2024-10-01 03:11:39         self.eval_staticGroup(self.static2, analyser)
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 1159, in eval_staticGroup
2024-10-01 03:11:39         r = colomn()
2024-10-01 03:11:39             ^^^^^^^^
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 1270, in source
2024-10-01 03:11:39         return self.parser.source.as_tag_value()
2024-10-01 03:11:39                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 454, in as_tag_value
2024-10-01 03:11:39         return " - ".join(filter(lambda x: x is not None, [self.attribution, self._get_millesime()]))
2024-10-01 03:11:39                                                                              ^^^^^^^^^^^^^^^^^^^^^
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 440, in _get_millesime
2024-10-01 03:11:39         self.millesime = self.get_millesime()
2024-10-01 03:11:39                          ^^^^^^^^^^^^^^^^^^^^
2024-10-01 03:11:39       File "/data/project/osmose/backend/analysers/Analyser_Merge.py", line 532, in get_millesime
2024-10-01 03:11:39         downloader.requests_retry_session().head(self.fileUrl).headers['Last-Modified'],
2024-10-01 03:11:39         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
2024-10-01 03:11:39       File "/usr/lib/python3/dist-packages/requests/structures.py", line 52, in __getitem__
2024-10-01 03:11:39         return self._store[key.lower()][1]
2024-10-01 03:11:39                ~~~~~~~~~~~^^^^^^^^^^^^^
2024-10-01 03:11:39     KeyError: 'last-modified'

As seen here, it tries to access file on @cquest server but the last directory is not there anymore.

I don't know what's the proper fix to this problem and if the fix has to be on the source server or if osmose-backend code has to be adapted.