Bump sqlfluff from 0.6.5 to 0.6.6 in /dependencies (#2001)

Bumps [sqlfluff](https://github.com/sqlfluff/sqlfluff) from 0.6.5 to 0.6.6.
- [Release notes](https://github.com/sqlfluff/sqlfluff/releases)
- [Changelog](https://github.com/sqlfluff/sqlfluff/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sqlfluff/sqlfluff/compare/0.6.5...0.6.6)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Lukas Gravley <admiralawkbar@github.com>

dependencies/Pipfile.lock

@@ -1054,7 +1054,7 @@
                 "sha256:71d14489da58b60ce12fc3ecb823facc59a8b23cd1b58edb97175640350d3a62",
                 "sha256:75abf758717a92a8f53aa96953f0c245c8cedf8e1e4184903db3659b419d4c17"
             ],
-            "markers": "python_version >= '3.6' and python_full_version < '4.0.0'",
+            "markers": "python_version >= '3.6' and python_version < '4'",
             "version": "==5.2.1"
         },
         "smmap": {
@@ -1082,11 +1082,11 @@
         },
         "sqlfluff": {
             "hashes": [
-                "sha256:5fe37965af4fee38ab0d38cbb42c6be134a7462b27b3ce3eb5ee2fbb261b05ef",
-                "sha256:a44a406495522d8dc8b3550f96b9fa570316e23512faa3f9e95bfe3a4a810558"
+                "sha256:c35c7c425b614093c8fdde006419f647db28aa3b39ac946419be07dacd1ac48e",
+                "sha256:cbd53bae00ea677185cff77d51337b47eb4c747ef462883efe1325fe58d9bb07"
             ],
             "index": "pypi",
-            "version": "==0.6.5"
+            "version": "==0.6.6"
         },
         "stopit": {
             "hashes": [