Fix CI failure on 1.45

```
error: failed to get `assert_matches` as a dependency of package `futures v0.4.0-alpha.0 (/home/runner/work/futures-rs/futures-rs/futures)`

Caused by:
  failed to load source for dependency `assert_matches`

Caused by:
  Unable to update registry `https://github.com/rust-lang/crates.io-index`

Caused by:
  failed to fetch `https://github.com/rust-lang/crates.io-index`

Caused by:
  error reading from the zlib stream; class=Zlib (5)
```

Author: taiki-e

.github/workflows/ci.yml

@@ -97,6 +97,8 @@ jobs:
 
   util-msrv:
     name: cargo +${{ matrix.rust }} build
+    env:
+      CARGO_NET_GIT_FETCH_WITH_CLI: true
     strategy:
       matrix:
         rust: