Bump intl to 9145f308f1458f37630a1ffce3b7d3b471ebbc56

Changes:
```
> git log --format="%C(auto) %h %s" 9669926..9145f30
 https://dart.googlesource.com/intl.git/+/9145f30 Bump actions/checkout from 2 to 3 (#462)
 https://dart.googlesource.com/intl.git/+/f545753 update the analysis_options.yaml file (#449)
 https://dart.googlesource.com/intl.git/+/fee2c2d Add a changelog entry for a recent feature (#406)
 https://dart.googlesource.com/intl.git/+/4e37662 GitHub Sync (#405)
 https://dart.googlesource.com/intl.git/+/0a14483 Bump dart-lang/setup-dart from 0.3 to 1 (#403)
 https://dart.googlesource.com/intl.git/+/f22f7b5 fix directive sorting
 https://dart.googlesource.com/intl.git/+/ed2fbe0 Add dependabot
 https://dart.googlesource.com/intl.git/+/2518923 Merge pull request #377 from dart-lang/franklinyow-patch-1
 https://dart.googlesource.com/intl.git/+/bee0456 Update LICENSE
 https://dart.googlesource.com/intl.git/+/9bb4bcc Migrating to dart:ffi in Dart 2.12.
 https://dart.googlesource.com/intl.git/+/532a1e3 Migrating to `dart:ffi` in Dart 2.12 and `package:ffi` 1.0.0.
 https://dart.googlesource.com/intl.git/+/458129d Replace git dependencies with published versions
 https://dart.googlesource.com/intl.git/+/5fd7a11 COPYBARA CHANGE FOR dart-archive/intl#358
 https://dart.googlesource.com/intl.git/+/2c8e014 Fix typo; see https://screenshot.googleplex.com/5afwL4iQtHeJKLC
 https://dart.googlesource.com/intl.git/+/33251e0 Prepare to publish for stable null safety (#362)
 https://dart.googlesource.com/intl.git/+/b3da438 Prep release for beta (#338)
 https://dart.googlesource.com/intl.git/+/48675cf Prepare a version of intl that supports the 2.12 sdk

```

Diff: https://dart.googlesource.com/intl.git/+/9669926609e7efc17dfd74fbb44ec719a7e573cc~..9145f308f1458f37630a1ffce3b7d3b471ebbc56/
Change-Id: Ic431da0e0785bd4ece86542fae30aad55f384f50
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/245222
Commit-Queue: Devon Carew <[email protected]>
Reviewed-by: Nate Bosch <[email protected]>

DEPS

@@ -118,7 +118,7 @@ vars = {
   "http_parser_rev": "9126ee04e77fd8e4e2e6435b503ee4dd708d7ddc",
   "http_rev": "2c9b418f5086f999c150d18172d2eec1f963de7b",
   "icu_rev": "81d656878ec611cb0b42d52c82e9dae93920d9ba",
-  "intl_rev": "9669926609e7efc17dfd74fbb44ec719a7e573cc",
+  "intl_rev": "9145f308f1458f37630a1ffce3b7d3b471ebbc56",
   "jinja2_rev": "2222b31554f03e62600cd7e383376a7c187967a1",
   "json_rpc_2_rev": "7e00f893440a72de0637970325e4ea44bd1e8c8e",
   "linter_rev": "4305b933c8ed0275f26a99bd1ade39fe9130e6a5", # 1.23.0