Increase MSRV to 1.54

It was released on 2021-07-29, so nearly a year ago now.

Author: Thomasdezeeuw

.github/workflows/main.yml

@@ -15,14 +15,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        build: [stable, 1.46.0, beta, nightly, macos, windows]
+        build: [stable, 1.54.0, beta, nightly, macos, windows]
         include:
           - build: stable
             os: ubuntu-latest
             rust: stable
-          - build: 1.46.0
+          - build: 1.54.0
             os: ubuntu-latest
-            rust: 1.46.0
+            rust: 1.54.0
           - build: beta
             os: ubuntu-latest
             rust: beta

README.md

@@ -64,7 +64,7 @@ feature flag.
 
 # Minimum Supported Rust Version (MSRV)
 
-Socket2 uses 1.46.0 as MSRV.
+Socket2 uses 1.54.0 as MSRV.
 
 # License