fix: missing quotes for the slurm comment (#211)

Snakemake does not correctly escape the comment it passes to slurm. When
a wildcard contains for example a `(` this will lead to errors.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

Minor internal updates have been deployed to streamline how job
submission commands are assembled. These refinements maintain the
current functionality and user experience without introducing any
visible changes.

- **Refactor**
- Enhanced internal handling of command formatting during job
submissions to ensure consistency.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: benjamin-lieser

snakemake_executor_plugin_slurm/__init__.py

@@ -208,7 +208,7 @@ def run_job(self, job: JobExecutorInterface):
             f"--job-name {self.run_uuid} "
             f"--output '{slurm_logfile}' "
             f"--export=ALL "
-            f"--comment {comment_str}"
+            f"--comment '{comment_str}'"
         )
 
         call += self.get_account_arg(job)