Bump sqlfluff from 1.4.2 to 1.4.4 in /src (#3309)

* Bump sqlfluff from 1.4.2 to 1.4.4 in /src

Bumps [sqlfluff](https://github.com/sqlfluff/sqlfluff) from 1.4.2 to 1.4.4.
- [Release notes](https://github.com/sqlfluff/sqlfluff/releases)
- [Changelog](https://github.com/sqlfluff/sqlfluff/blob/main/CHANGELOG.md)
- [Commits](sqlfluff/sqlfluff@1.4.2...1.4.4)

---
updated-dependencies:
- dependency-name: sqlfluff
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update sqlfluff config for new version

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Barry Pollard <barrypollard@google.com>

Author: dependabot[bot]

sql/.sqlfluff

@@ -11,9 +11,10 @@ templater = jinja
 # Comma separated list of rules to check, default to all
 rules = all
 # Comma separated list of rules to exclude, or None
-exclude_rules = L011,L014,L016,L020,L022,L026,L027,L028,L029,L030,L031,L032,L034,L035,L036,L037,L042,L043,L051,L060
+exclude_rules = L011,L014,L015,L016,L020,L022,L026,L027,L028,L029,L030,L031,L032,L034,L035,L036,L037,L042,L043,L051,L060
 # L011 - We don't always alias tables with AS ("FROM table1 AS tb1" instead of "FROM table1 tb1"). Do for columns but not for tables.
 # L014 - Unquoted identifiers (e.g. column names) will be mixed case so don't enforce case
+# L015 - Sometimes clearer to include brackets for complex COUNT(DISTINCT) cases
 # L016 - We allow longer lines as some of our queries are complex. Maybe should limit in future?
 # L020 - Asks for unique table aliases meaning it complains if selecting from two 2021_07_01 tables as implicit alias is table name (not fully qualified) so same.
 # L022 - CTEs may be chained and do not require a blank line separator, only the last one.

src/requirements.txt

@@ -4,4 +4,4 @@ gunicorn==20.1.0
 pytest==7.2.0
 pytest-watch==4.2.0
 pytest-cov==4.0.0
-sqlfluff==1.4.2
+sqlfluff==1.4.4