Fixed clippy run in CI

Author: fpagliughi

.github/workflows/rust.yml

@@ -73,6 +73,13 @@ jobs:
     - uses: actions-rs/toolchain@v1
       with:
         toolchain: 1.73.0
-        override: true
         components: clippy
-    - run: cargo clippy -- -D warnings
+
+    - name: Resolve dependencies for MSRV
+      run: |
+        mkdir -p $HOME/.cargo
+        echo 'resolver.incompatible-rust-versions = "fallback"' > $HOME/.cargo/config.toml
+        cargo +stable update
+
+    - name: Run clippy
+      run: cargo +1.73.0 clippy -- -D warnings