bump MSRV to 1.63

Author: davidhewitt

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ jobs:
         include:
           - python-version: "3.12"
             os: "ubuntu-latest"
-            rust: "1.56"
+            rust: "1.63"
 
     steps:
       - uses: actions/checkout@v4

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## Unreleased
 
+- Bump MSRV to 1.63
 - Update to PyO3 0.22
 - Remove deprecated `from_object`, use `from_object_bound` instead
 - Remove conversion from `PyDowncastError` to `PythonizeError`

Cargo.toml

@@ -3,7 +3,7 @@ name = "pythonize"
 version = "0.21.1"
 authors = ["David Hewitt <1939362+davidhewitt@users.noreply.github.com>"]
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.63"
 license = "MIT"
 description = "Serde Serializer & Deserializer from Rust <--> Python, backed by PyO3."
 homepage = "https://github.com/davidhewitt/pythonize"