install dependency in CI

Author: ethanburrell

Diff for: .github/workflows/CI.yml

@@ -276,7 +276,11 @@ jobs:
           toolchain: nightly
           override: true
 
-      - name: cargo check-external-types
+      - name: Install cargo-check-external-types
+        uses: actions-rs/toolchain@v1
+        run: cargo install [email protected]
+
+      - name: check-external-types
         uses: actions-rs/cargo@v1
         with:
           command: check-external-types

Diff for: Cargo.toml

@@ -45,7 +45,6 @@ libc = { version = "0.2", optional = true }
 socket2 = { version = "0.4", optional = true }
 
 [dev-dependencies]
-cargo-check-external-types = "0.1.2"
 futures-util = { version = "0.3", default-features = false, features = ["alloc"] }
 matches = "0.1"
 num_cpus = "1.0"