Update MSRV for all purposes to 1.63

.github/workflows/rust.yml

@@ -47,21 +47,6 @@ jobs:
       - run: cargo fmt --all -- --check
 
   msrv:
-    name: Rust ${{matrix.rust}}
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        rust: [1.60.0, 1.61.0]
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: ${{matrix.rust}}
-      - run: cargo build
-
-  msrv-test:
     name: Rust ${{matrix.rust}}
     runs-on: ubuntu-latest
     strategy:
@@ -74,6 +59,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{matrix.rust}}
+      - run: cargo build
       - run: cargo test
       - run: cargo test --no-default-features
       - run: cargo test --features serde

Cargo.toml

@@ -10,7 +10,7 @@ documentation = "https://docs.rs/bit-set/"
 keywords = ["data-structures", "bitset"]
 readme = "README.md"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.63"
 
 [dependencies]
 serde = { version = "1.0", features = ["derive"], optional = true }