chore(vscode): rename import linter cache setting

Update the VS Code file nesting exclusions to match the current
`.import_linter_cache` directory name. This keeps generated cache files
hidden in the editor.

Author: liblaf

template/.vscode/settings.json

@@ -7,7 +7,7 @@
     "**/.coverage.*": true,
     "**/.grimp_cache/": true,
     "**/.hypothesis/": true,
-    "**/.import_lint_cache/": true,
+    "**/.import_linter_cache/": true,
     "**/.nox/": true,
     "**/.pixi/": true,
     "**/.pytest_cache/": true,