[crypto] Prepare to publish 3.0.8 (#1026)

pkgs/crypto/CHANGELOG.md

diff --git a/pkgs/crypto/CHANGELOG.md b/pkgs/crypto/CHANGELOG.md
index 27555c3..a2c4fe0 100644
--- a/pkgs/crypto/CHANGELOG.md
+++ b/pkgs/crypto/CHANGELOG.md
@@ -1,10 +1,16 @@
-## 3.0.8-wip
+## 3.0.8
 
 - Fix the sink returned by `Hmac.startChunkedConversion` not emitting a digest
   when `addSlice` is called with `isLast: true`.
 - Drop unused `pkg:typed_data` dependency.
 - Work-around [dart-lang/sdk#63747](https://github.com/dart-lang/sdk/issues/63747).
-- Performance improvements for all hash functions, `md5` in particular.
+- Speedup hashing 4 KiB inputs relative to version `3.0.7`:
+
+  | Hash              | AOT   | dart2js | dart2wasm |
+  |-------------------|-------|---------|-----------|
+  | `md5`             | 1.2x  | 6.2x    | 1.4x      |
+  | `sha224`/`sha256` | 1.35x | 1.15x   | 1.05x     |
+  | `sha384`/`sha512` | 3.1x  | 6.0x    | 5.1x      |
 
 ## 3.0.7
 

pkgs/crypto/pubspec.yaml

diff --git a/pkgs/crypto/pubspec.yaml b/pkgs/crypto/pubspec.yaml
index 0b2a633..02aa143 100644
--- a/pkgs/crypto/pubspec.yaml
+++ b/pkgs/crypto/pubspec.yaml
@@ -1,5 +1,5 @@
 name: crypto
-version: 3.0.8-wip
+version: 3.0.8
 description: Implementations of SHA, MD5, and HMAC cryptographic functions.
 repository: https://github.com/dart-lang/core/tree/main/pkgs/crypto
 issue_tracker: https://github.com/dart-lang/core/issues?q=is%3Aissue+is%3Aopen+label%3Apackage%3Acrypto