Pull linter 0.1.27 into the SDK.

* Fixed cast exception in `dart_type_utilities` (#27405).
* New `parameter_assignments` lint.
* New `prefer_final_fields` lint.
* New `prefer_final_locals` lint.
* Markdown link fixes in docs (#306).
* Miscellaneous solo test running fixes and introduction of `solo_debug` (#304).

R=scheglov@google.com

Review URL: https://codereview.chromium.org/2369463003 .

DEPS

@@ -73,7 +73,7 @@ vars = {
   "jinja2_rev": "@2222b31554f03e62600cd7e383376a7c187967a1",
   "json_rpc_2_tag": "@2.0.2",
   "kernel_rev": "@449803b82e850a41148e636db1a6e4a848284aed",
-  "linter_tag": "@0.1.26",
+  "linter_tag": "@0.1.27",
   "logging_tag": "@0.11.3+1",
   "markdown_rev": "@4aaadf3d940bb172e1f6285af4d2b1710d309982",
   "matcher_tag": "@0.12.0+2",