chore: prepare Tokio v1.51.3 (#8127)

README.md

@@ -60,7 +60,7 @@ Make sure you enable the full features of the tokio crate on Cargo.toml:
 
 ```toml
 [dependencies]
-tokio = { version = "1.51.2", features = ["full"] }
+tokio = { version = "1.51.3", features = ["full"] }
 ```
 Then, on your main.rs:
 

tokio/CHANGELOG.md

@@ -1,3 +1,12 @@
+# 1.51.3 (May 8th, 2026)
+
+### Fixed
+
+* sync: fix underflow in mpsc channel `len()` ([#8062])
+* sync: notify receivers in mpsc `OwnedPermit::release()` method ([#8075])
+* sync: require that an `RwLock` has `max_readers != 0` ([#8076])
+* sync: return `Empty` from `try_recv()` when mpsc is closed with outstanding permits ([#8074])
+
 # 1.51.2 (May 4th, 2026)
 
 This release reverts the LIFO slot stealing change introduced in 1.51.0

tokio/Cargo.toml

@@ -6,7 +6,7 @@ name = "tokio"
 #   - README.md
 # - Update CHANGELOG.md.
 # - Create "v1.x.y" git tag.
-version = "1.51.2"
+version = "1.51.3"
 edition = "2021"
 rust-version = "1.71"
 authors = ["Tokio Contributors <[email protected]>"]

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 = "1.51.2", features = ["full"] }
+tokio = { version = "1.51.3", features = ["full"] }
 ```
 Then, on your main.rs: