refactor: ♻️ use bash for check-commits justfile recipe (#150)

# Description

Moved this from #134. 

No review needed.

Author: lwjohnst86

template/justfile.jinja

@@ -63,16 +63,17 @@ build-website:
   uv run quartodoc build
   uv run quarto render --execute
 
-# Run checks on commits with non-main branches
+# Check the commit messages on the current branch that are not on the main branch
 check-commits:
-  #!/bin/zsh
+  #!/usr/bin/env bash
   branch_name=$(git rev-parse --abbrev-ref HEAD)
   number_of_commits=$(git rev-list --count HEAD ^main)
   if [[ ${branch_name} != "main" && ${number_of_commits} -gt 0 ]]
   then
-    uv run cz check --rev-range main..HEAD
+    # If issue happens, try `uv tool update-shell`
+    uvx --from commitizen cz check --rev-range main..HEAD
   else
-    echo "Can't either be on ${branch_name} or have more than ${number_of_commits}."
+    echo "On 'main' or current branch doesn't have any commits."
   fi
 
 # Run basic security checks on the package