Increase the MSRV to 1.59.0

Note, this is still lower than the MSRV used in `specs`.

I bumped this because rayon-core v1.11.0 requires this version and the
CI was failing since there is no lockfile pinning this to an older
rayon-core version.

Author: Imberflur

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
           - nightly
           - beta
           - stable
-          - 1.56.1 # MSRV
+          - 1.59.0 # MSRV
 
     timeout-minutes: 10
 

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+* Increase MSRV to 1.59.0 because of `rayon-core v1.11.0`.
+
 ## 0.14.1 (2022-07-14)
 
 * Undo performance regression from removing `hashbrown` by using `ahash` hasher

Cargo.toml

@@ -14,7 +14,7 @@ categories = ["concurrency"]
 license = "MIT OR Apache-2.0"
 exclude = ["bors.toml", ".travis.yml"]
 edition = "2021"
-rust-version = "1.56.1"
+rust-version = "1.59.0"
 
 [dependencies]
 ahash = "0.7.6"