Bump pub

New in this revision:

> git log --format="%C(auto) %h %s" b10966c6a8ad7d95c2023b7842fa2697001d2fdf..c00d4b4abf5b4ff265a7ce6282b748551f1b5b1f
 c00d4b4a Improve message in `pub outdated` when incompatible versions are found (#2746)
 2a177623 outdated --mode=null-safety, resolvable constrained to null-safe vers… (#2739)
 3ea2b832 Default language version (#2748)
 78865460 Don't allow both --json and --transitive (#2742)

Fixes https://github.com/dart-lang/sdk/issues/44013

Change-Id: I0dc876c5e57777a4724d90662408f91910e2517c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/171720
Commit-Queue: Sigurd Meldgaard <sigurdm@google.com>
Reviewed-by: Jonas Jensen <jonasfj@google.com>
Reviewed-by: Michael Thomsen <mit@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 139cd68..548f1a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -98,6 +98,9 @@
   ```
 
   See [#44072][].
+
+  For legacy dependencies without an sdk constraint pub will now assume a
+  default language version of 2.7.
 * The top level `pub` executable has been deprecated. Use `dart pub` instead.
   See [dart tool][].
 * New command `dart pub add` that adds  new dependencies to your `pubspec.yaml`.
diff --git a/DEPS b/DEPS
index bb39333..73717bf 100644
--- a/DEPS
+++ b/DEPS
@@ -132,7 +132,7 @@
   "ply_rev": "604b32590ffad5cbb82e4afef1d305512d06ae93",
   "pool_rev": "eedbd5fde84f9a1a8da643b475305a81841da599",
   "protobuf_rev": "3746c8fd3f2b0147623a8e3db89c3ff4330de760",
-  "pub_rev": "b10966c6a8ad7d95c2023b7842fa2697001d2fdf",
+  "pub_rev": "c00d4b4abf5b4ff265a7ce6282b748551f1b5b1f",
   "pub_semver_tag": "v1.4.4",
   "resource_rev": "6b79867d0becf5395e5819a75720963b8298e9a7",
   "root_certificates_rev": "7e5ec82c99677a2e5b95ce296c4d68b0d3378ed8",