[pre-commit.ci] pre-commit autoupdate (#2047)

updates:
- [github.com/pre-commit/mirrors-prettier: v3.0.0-alpha.4 → v3.0.0-alpha.6](pre-commit/mirrors-prettier@v3.0.0-alpha.4...v3.0.0-alpha.6)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -90,7 +90,7 @@ repos:
           ]
         exclude: tests/testdata| # exclude everything, we're not ready
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v3.0.0-alpha.4
+    rev: v3.0.0-alpha.6
     hooks:
       - id: prettier
         args: [--prose-wrap=always, --print-width=88]