Version 2.12.0-19.0.dev

Merge commit '97015a0f07f8e80decba2c9cee1577e12186380e' into 'dev'

Author: Dart CI

CHANGELOG.md

@@ -56,9 +56,9 @@ opted out of null safety by adding `// @dart=2.9` to the beginning of the file.
 
 #### Linter
 
-Updated the Linter to `0.1.122`, which includes:
+Updated the Linter to `0.1.123`, which includes:
 
-* A fixed NPE in `unnecessary_null_checks`.
+* Fixed NPEs in `unnecessary_null_checks`.
 * A fixed NPE in `missing_whitespace_between_adjacent_strings`.
 * Updates to `void_checks` for NNBD.
 * A fixed range error in `unnecessary_string_escapes`.

DEPS

@@ -117,7 +117,7 @@ vars = {
   "intl_tag": "0.17.0-nullsafety",
   "jinja2_rev": "2222b31554f03e62600cd7e383376a7c187967a1",
   "json_rpc_2_rev": "8f189db8f0c299187a0e8fa959dba7e9b0254be5",
-  "linter_tag": "0.1.122",
+  "linter_tag": "0.1.123",
   "logging_rev": "9d2a7fdd05b09bc06474881152b5baaf38fd1329",
   "markupsafe_rev": "8f45f5cfa0009d2a70589bcda0349b8cb2b72783",
   "markdown_rev": "6f89681d59541ddb1cf3a58efbdaa2304ffc3f51",

tools/VERSION

@@ -27,5 +27,5 @@ CHANNEL dev
 MAJOR 2
 MINOR 12
 PATCH 0
-PRERELEASE 18
+PRERELEASE 19
 PRERELEASE_PATCH 0