[ffigen] Release 11 Stable (#872)

Release 11 stable with the latest fixes on Dart 3.2 before starting to depend on a Dart 3.3-dev version.

Should be merged after:

* https://github.com/dart-lang/native/pull/869

And before:

* https://github.com/dart-lang/native/pull/860
diff --git a/pkgs/ffigen/CHANGELOG.md b/pkgs/ffigen/CHANGELOG.md
index db95d58..cc50b1d 100644
--- a/pkgs/ffigen/CHANGELOG.md
+++ b/pkgs/ffigen/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 11.0.0-wip
+## 11.0.0
 
 - Any compiler errors/warnings in source header files will now result in
 bindings to **not** be generated by default, since it may result in invalid
diff --git a/pkgs/ffigen/pubspec.yaml b/pkgs/ffigen/pubspec.yaml
index b926ee5..d0bea76 100644
--- a/pkgs/ffigen/pubspec.yaml
+++ b/pkgs/ffigen/pubspec.yaml
@@ -3,7 +3,7 @@
 # BSD-style license that can be found in the LICENSE file.
 
 name: ffigen
-version: 11.0.0-wip
+version: 11.0.0
 description: >
   Generator for FFI bindings, using LibClang to parse C, Objective-C, and Swift
   files.
@@ -14,7 +14,7 @@
   - codegen
 
 environment:
-  sdk: '>=3.2.0 <4.0.0'
+  sdk: ">=3.2.0 <4.0.0"
 
 dependencies:
   ffi: ^2.0.1