feat(cubestore): add CUBEJS_GH_API_TOKEN env var to download script

[icebob]

Check List

• Tests has been run in packages where changes made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

Issue Reference this PR resolves

Resolves #4264

Description of Changes Made (if issue reference is not provided)

[codecov]

Codecov Report

Merging #4282 (2b9ab31) into master (a57ae4b) will decrease coverage by 16.81%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #4282       +/-   ##
===========================================
- Coverage   75.78%   58.97%   -16.82%     
===========================================
  Files          85      133       +48     
  Lines        8958    10879     +1921     
  Branches        0     2561     +2561     
===========================================
- Hits         6789     6416      -373     
- Misses       2169     4188     +2019     
- Partials        0      275      +275     

Flag	Coverage Δ
cube-backend	58.97% <ø> (?)
cubesql	?

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Impacted Files	Coverage Δ
...st/cubesql/cubeclient/src/models/v1_load_result.rs
...ql/src/sql/database_variables/mysql/global_vars.rs
...ompile/engine/information_schema/mysql/schemata.rs
rust/cubesql/cubesql/src/config/injection.rs
...st/cubesql/cubesql/src/compile/rewrite/rewriter.rs
...nt/src/models/v1_load_request_query_filter_item.rs
...engine/information_schema/postgres/pg_namespace.rs
rust/cubesql/cubesql/src/sql/postgres/shim.rs
rust/cubesql/cubesql/src/sql/mysql/service.rs
...ile/engine/information_schema/mysql/processlist.rs
... and 208 more

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