chore: prepare Tokio v1.51.2 (#8113)

Author: Darksonn

README.md

@@ -60,7 +60,7 @@ Make sure you enable the full features of the tokio crate on Cargo.toml:
 
 ```toml
 [dependencies]
-tokio = { version = "1.51.1", features = ["full"] }
+tokio = { version = "1.51.2", features = ["full"] }
 ```
 Then, on your main.rs:
 

tokio/CHANGELOG.md

@@ -1,3 +1,11 @@
+# 1.51.2 (May 4th, 2026)
+
+This release reverts the LIFO slot stealing change introduced in 1.51.0
+([#7431]), due to [its performance impact][#8065]. ([#8100])
+
+[#8065]: https://github.com/tokio-rs/tokio/pull/8065
+[#8100]: https://github.com/tokio-rs/tokio/pull/8100
+
 # 1.51.1 (April 8th, 2026)
 
 ### Fixed

tokio/Cargo.toml

@@ -6,7 +6,7 @@ name = "tokio"
 #   - README.md
 # - Update CHANGELOG.md.
 # - Create "v1.x.y" git tag.
-version = "1.51.1"
+version = "1.51.2"
 edition = "2021"
 rust-version = "1.71"
 authors = ["Tokio Contributors <team@tokio.rs>"]

tokio/README.md

@@ -60,7 +60,7 @@ Make sure you enable the full features of the tokio crate on Cargo.toml:
 
 ```toml
 [dependencies]
-tokio = { version = "1.51.1", features = ["full"] }
+tokio = { version = "1.51.2", features = ["full"] }
 ```
 Then, on your main.rs: