Reset DevTools to next dev version (#9604)

packages/devtools_app/lib/devtools.dart

diff --git a/packages/devtools_app/lib/devtools.dart b/packages/devtools_app/lib/devtools.dart
index caba9b5..6ac7b74 100644
--- a/packages/devtools_app/lib/devtools.dart
+++ b/packages/devtools_app/lib/devtools.dart
@@ -10,4 +10,4 @@
 /// Note: a regexp in the `dt update-version' command logic matches the constant
 /// declaration `const version =`. If you change the declaration you must also
 /// modify the regex in the `dt update-version' command logic.
-const version = '2.54.0';
+const version = '2.55.0-dev.0';

packages/devtools_app/pubspec.yaml

diff --git a/packages/devtools_app/pubspec.yaml b/packages/devtools_app/pubspec.yaml
index e17f6a0..d986231 100644
--- a/packages/devtools_app/pubspec.yaml
+++ b/packages/devtools_app/pubspec.yaml
@@ -7,7 +7,7 @@
 
 # Note: this version should only be updated by running the 'dt update-version'
 # command that updates the version here and in 'devtools.dart'.
-version: 2.54.0
+version: 2.55.0-dev.0
 
 repository: https://github.com/flutter/devtools/tree/master/packages/devtools_app
 

packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md

diff --git a/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md b/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md
index d5d4a6c..dec446f 100644
--- a/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md
+++ b/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md
@@ -6,23 +6,20 @@
 This is draft for future release notes, that are going to land on
 [the Flutter website](https://docs.flutter.dev/tools/devtools/release-notes).
 
-# DevTools 2.54.0 release notes
+# DevTools 2.55.0 release notes
 
-The 2.54.0 release of the Dart and Flutter DevTools
+The 2.55.0 release of the Dart and Flutter DevTools
 includes the following changes among other general improvements.
 To learn more about DevTools, check out the
 [DevTools overview](/tools/devtools/overview).
 
 ## General updates
 
-- Dropped connections to DTD will now automatically be retried to improve the
-  experience when your machine is resumed from sleep.
-  [#9587](https://github.com/flutter/devtools/pull/9587)
+TODO: Remove this section if there are not any updates.
 
 ## Inspector updates
 
-- Added a warning banner that the legacy inspector will be removed in a future
-  release. - [#9572](https://github.com/flutter/devtools/pull/9572)
+TODO: Remove this section if there are not any updates.
 
 ## Performance updates
 
@@ -34,8 +31,7 @@
 
 ## Memory updates
 
-- Fixed error preventing users from changing the zoom duration. -
-  [#9573](https://github.com/flutter/devtools/pull/9573)
+TODO: Remove this section if there are not any updates.
 
 ## Debugger updates
 
@@ -55,11 +51,7 @@
 
 ## Deep links tool updates
 
-- Added more informative dialog if Deep Links tool is unable to find build
-  options for the iOS or Android app. -
-  [#9571](https://github.com/flutter/devtools/pull/9571)
-- Fixed null error when parsing universal link settings -
-  [#9581](https://github.com/flutter/devtools/pull/9581)
+TODO: Remove this section if there are not any updates.
 
 ## VS Code Sidebar updates
 
@@ -76,4 +68,4 @@
 ## Full commit history
 
 To find a complete list of changes in this release, check out the
-[DevTools git log](https://github.com/flutter/devtools/tree/v2.54.0).
+[DevTools git log](https://github.com/flutter/devtools/tree/v2.55.0).

pubspec.lock

diff --git a/pubspec.lock b/pubspec.lock
index c6ab1cd..7127d25 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -109,10 +109,10 @@
     dependency: transitive
     description:
       name: characters
-      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
       url: "https://pub.dev"
     source: hosted
-    version: "1.4.0"
+    version: "1.4.1"
   checked_yaml:
     dependency: transitive
     description: