build: MSRV to 1.57.0

Author: laysakura

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
         rust:
           - nightly
           - stable
-          - 1.56.0  # MSRV
+          - 1.57.0  # MSRV
         make:
           - name: format
             task: format
@@ -48,37 +48,37 @@ jobs:
           - rust: nightly
             make:
               name: format
-          - rust: 1.56.0
+          - rust: 1.57.0
             make:
               name: format
           - rust: nightly
             make:
               name: lint
-          - rust: 1.56.0
+          - rust: 1.57.0
             make:
               name: lint
           - rust: nightly
             make:
               name: doc
-          - rust: 1.56.0
+          - rust: 1.57.0
             make:
               name: doc
           - rust: nightly
             make:
               name: deadlink
-          - rust: 1.56.0
+          - rust: 1.57.0
             make:
               name: deadlink
           - rust: stable
             make:
               name: codecov
-          - rust: 1.56.0
+          - rust: 1.57.0
             make:
               name: codecov
           - rust: nightly
             make:
               name: copyright
-          - rust: 1.56.0
+          - rust: 1.57.0
             make:
               name: copyright
     env: