ci: update cargo-check-external-types to 0.1.7 (#5786)

.github/workflows/ci.yml

@@ -677,7 +677,7 @@ jobs:
         working-directory: tests-integration
 
   check-external-types:
-    name: check-external-types
+    name: check-external-types (${{ matrix.os }})
     needs: basics
     runs-on: ${{ matrix.os }}
     strategy:
@@ -685,20 +685,23 @@ jobs:
         os:
           - windows-latest
           - ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Install Rust nightly-2022-11-16
-        uses: dtolnay/rust-toolchain@master
-        with:
+        rust:
           # `check-external-types` requires a specific Rust nightly version. See
           # the README for details: https://github.com/awslabs/cargo-check-external-types
-          toolchain: nightly-2022-11-16
+          - nightly-2023-05-31
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Rust ${{ matrix.rust }}
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
       - uses: Swatinem/rust-cache@v2
+      - name: Install cargo-check-external-types
+        uses: taiki-e/cache-cargo-install-action@v1
+        with:
+          tool: [email protected]
       - name: check-external-types
-        run: |
-          set -x
-          cargo install cargo-check-external-types --locked --version 0.1.6
-          cargo check-external-types --all-features --config external-types.toml
+        run: cargo check-external-types --all-features --config external-types.toml
         working-directory: tokio
 
   check-fuzzing: