fix(ci): remove unsupported --language flag from tree-sitter parse

The --language flag is not supported in tree-sitter-cli 0.25.10.
Tree-sitter correctly auto-detects the grammar based on file extension.

.github/workflows/test.yml

@@ -140,7 +140,7 @@ jobs:
           End
           EOF
 
-          npx tree-sitter parse --language=shellspec test_sample.shellspec --quiet || {
+          npx tree-sitter parse test_sample.shellspec --quiet || {
             echo "❌ Parser failed on sample ShellSpec code"
             exit 1
           }