Build: Bump pyspark from 3.5.5 to 3.5.6

Bumps [pyspark](https://github.com/apache/spark) from 3.5.5 to 3.5.6.
- [Commits](apache/spark@v3.5.5...v3.5.6)

---
updated-dependencies:
- dependency-name: pyspark
  dependency-version: 3.5.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

poetry.lock

@@ -97,7 +97,7 @@ requests-mock = "1.12.1"
 moto = { version = "^5.0.2", extras = ["server"] }
 typing-extensions = "4.13.2"
 pytest-mock = "3.14.1"
-pyspark = "3.5.5"
+pyspark = "3.5.6"
 cython = "3.1.1"
 deptry = ">=0.14,<0.24"
 datafusion = ">=44,<48"