Redshift: CALL statement

[greg-finley]

Brief summary of the change made

Closes #3523

Are there any other side effects of this change that we should be aware of?

No

Pull Request checklist

• Please confirm you have completed any of the necessary steps below.

• Included test cases to demonstrate any code changes, which may be one or more of the following:

  • .yml rule test cases in test/fixtures/rules/std_rule_cases.
  • .sql/.yml parser test cases in test/fixtures/dialects (note YML files can be auto generated with tox -e generate-fixture-yml).
  • Full autofix test cases in test/fixtures/linter/autofix.
  • Other.

• Added appropriate documentation for the change.

• Created GitHub issues for any relevant followup/future enhancements if appropriate.

[tunetheweb]

LGTM!

[codecov]

Codecov Report

Merging #3529 (04984be) into main (8f65c30) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main     #3529   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          171       171           
  Lines        13029     13032    +3     
=========================================
+ Hits         13029     13032    +3     

Impacted Files	Coverage Δ
src/sqlfluff/dialects/dialect_redshift.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8f65c30...04984be. Read the comment docs.