Prepare to publish for stable null safety (dart-lang/stack_trace#105)

pkgs/stack_trace/CHANGELOG.md

diff --git a/pkgs/stack_trace/CHANGELOG.md b/pkgs/stack_trace/CHANGELOG.md
index 25773bb..ec80e2a 100644
--- a/pkgs/stack_trace/CHANGELOG.md
+++ b/pkgs/stack_trace/CHANGELOG.md
@@ -1,5 +1,6 @@
-## 1.10.0-nullsafety.7-dev
+## 1.10.0
 
+* Stable release for null safety.
 * Fix broken test, `test/chain/vm_test.dart`, which incorrectly handles
   asynchronous suspension gap markers at the end of stack traces.
 

pkgs/stack_trace/pubspec.yaml

diff --git a/pkgs/stack_trace/pubspec.yaml b/pkgs/stack_trace/pubspec.yaml
index be5bced..721fc96 100644
--- a/pkgs/stack_trace/pubspec.yaml
+++ b/pkgs/stack_trace/pubspec.yaml
@@ -1,5 +1,5 @@
 name: stack_trace
-version: 1.10.0-nullsafety.7-dev
+version: 1.10.0
 description: A package for manipulating stack traces and printing them readably.
 homepage: https://github.com/dart-lang/stack_trace
 
@@ -7,7 +7,7 @@
   sdk: ">=2.12.0-0 <3.0.0"
 
 dependencies:
-  path: ^1.8.0-nullsafety
+  path: ^1.8.0
 
 dev_dependencies:
   pedantic: ^1.10.0-nullsafety