ci: pin nph version in ci

.github/workflows/ci.yml

@@ -55,7 +55,7 @@ jobs:
       - name: Check `nph` formatting
         uses: arnetheduck/nph-action@v1
         with:
-          version: latest
+          version: 0.6.1
           options: "codex/ tests/"
           fail: true
           suggest: true

tools/scripts/git_pre_commit_format.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-echo "Running pre-commit hook"
+echo "Formatting changed files with pre-commit hook"
 
 # Regexp for grep to only choose some file extensions for formatting
 exts="\.\(nim\|nims\)$"