Merge pull request #1270 from kenkoooo/dependabot/cargo/atcoder-problems-backend/futures-util-0.3.23

build(deps): bump futures-util from 0.3.21 to 0.3.23 in /atcoder-problems-backend

Author: kenkoooo

atcoder-problems-backend/Cargo.lock

@@ -30,7 +30,7 @@ reqwest = { version = "0.11", features = ["json"] }
 async-trait = "0.1"
 
 anyhow = "1.0"
-futures-util = "0.3.21"
+futures-util = "0.3.23"
 
 [dev-dependencies]
 httpmock = "0.6.6"