codemeta: Add compatibility with PyLD >= 2.0.0.

indexer build in failure [1]

since that change [2] got deployed upstream.

This commit fixes it.

• [1] https://jenkins.softwareheritage.org/job/DCIDX/job/tests/945

• [2] https://github.com/digitalbazaar/pyld/commit/46d2ca38c7b5c63696336eefdb543daecda622f3

Test Plan

Fixes the Jenkins build

---

Migrated from D3049 (view on Phabricator)

swh/indexer/codemeta.py

@@ -97,7 +97,7 @@ with open(CROSSWALK_TABLE_PATH) as fd:
     (CODEMETA_TERMS, CROSSWALK_TABLE) = _read_crosstable(fd)
 
 
-def _document_loader(url):
+def _document_loader(url, options=None):
     """Document loader for pyld.
 
     Reads the local codemeta.jsonld file instead of fetching it