Bump msrv for winnow

Author: jonhoo

.github/workflows/check.yml

@@ -89,7 +89,7 @@ jobs:
     # https://docs.github.com/en/actions/learn-github-actions/contexts#context-availability
     strategy:
       matrix:
-        msrv: [1.60.0]
+        msrv: [1.64.0] # for winnow
     name: ubuntu / ${{ matrix.msrv }}
     steps:
       - uses: actions/checkout@v4

Cargo.toml

@@ -2,6 +2,7 @@
 name = "msql-srv"
 version = "0.10.0"
 edition = "2018"
+rust-version = "1.64.0"
 
 description = "Bindings for emulating a MySQL/MariaDB server"
 readme = "README.md"