ci: Bump minimum rust version to 1.57.0

Author: tuxuser

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [beta, stable, 1.56.0]
+        rust: [beta, stable, 1.57.0]
 
     steps:
       - uses: actions/checkout@v3