Update cargo.yml

Author: Rusty Rain

crates/sdp/.github/workflows/cargo.yml

@@ -30,7 +30,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.54.0
+          toolchain: 1.55.0
           profile: minimal
           components: clippy, rustfmt
           override: true