Bump snakemake from 6.7.0 to 6.8.0 in /dependencies (#1962)

Bumps [snakemake](https://github.com/snakemake/snakemake) from 6.7.0 to 6.8.0.
- [Release notes](https://github.com/snakemake/snakemake/releases)
- [Commits](https://github.com/snakemake/snakemake/compare/v6.7.0...v6.8.0)

---
updated-dependencies:
- dependency-name: snakemake
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

dependencies/Pipfile.lock

@@ -1067,10 +1067,10 @@
         },
         "snakemake": {
             "hashes": [
-                "sha256:6f53d54044c5d1718c7858f45286beeffb220c794fe5f602a5c20bf0caf8ec07"
+                "sha256:152b791eef62955d8cdd6132b7a1af9b3d3b35cbf371d9cfb6926cd6c4ff4f00"
             ],
             "index": "pypi",
-            "version": "==6.7.0"
+            "version": "==6.8.0"
         },
         "sqlfluff": {
             "hashes": [