Fix batch objects where filter

[tsmith023]

This PR fixes a problem induced by the differing expected WhereFilter objects for the Batch delete objects REST endpoint, the filtering options on the Get GraphQL query, and the centralising Python-defined WhereFilter options.

Fundamentally, the GraphQL endpoint expects all keys as value<> determining the type based on the argument itself. The REST endpoint, however, expects the keys as value<>Array if they are lists. Finally, the Pythonic definition of these types is value<>List so conversion must be performed in each case to ensure validity of the user's request.

It also updates the Weaviate CI version to the latest PATCH.

[codecov-commenter]

Codecov Report

Patch coverage: 91.63% and project coverage change: -0.92% ⚠️

Comparison is base (eb3bf16) 95.43% compared to head (78d329c) 94.51%.
Report is 88 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #443      +/-   ##
==========================================
- Coverage   95.43%   94.51%   -0.92%     
==========================================
  Files          64       63       -1     
  Lines        8165     8097      -68     
==========================================
- Hits         7792     7653     -139     
- Misses        373      444      +71     

Files Changed	Coverage Δ
weaviate/util.py	91.02% <37.50%> (-5.31%)	⬇️
weaviate/batch/crud_batch.py	77.44% <69.51%> (-17.88%)	⬇️
weaviate/connect/connection.py	89.21% <78.57%> (+0.27%)	⬆️
weaviate/gql/aggregate.py	82.97% <85.45%> (+7.11%)	⬆️
weaviate/schema/crud_schema.py	78.66% <86.36%> (+0.51%)	⬆️
weaviate/gql/filter.py	93.53% <91.00%> (-0.82%)	⬇️
integration/test_schema.py	97.75% <93.54%> (-2.25%)	⬇️
integration/test_batch.py	98.41% <100.00%> (+0.37%)	⬆️
integration/test_cluster.py	100.00% <100.00%> (ø)
integration/test_graphql.py	94.08% <100.00%> (+0.44%)	⬆️
... and 10 more

... and 3 files with indirect coverage changes

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