build(deps): bump futures-core from 0.3.12 to 0.3.13

Bumps [futures-core](https://github.com/rust-lang/futures-rs) from 0.3.12 to 0.3.13.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/futures-rs/compare/0.3.12...0.3.13)

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -1117,9 +1117,9 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.12"
+version = "0.3.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79e5145dde8da7d1b3892dad07a9c98fc04bc39892b1ecc9692cf53e2b780a65"
+checksum = "15496a72fabf0e62bdc3df11a59a3787429221dd0710ba8ef163d6f7a9112c94"
 
 [[package]]
 name = "futures-cpupool"

tower-batch/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 [dependencies]
 tokio = { version = "0.3.6", features = ["time", "sync", "stream", "tracing", "macros"] }
 tower = { version = "0.4", features = ["util", "buffer"] }
-futures-core = "0.3.6"
+futures-core = "0.3.13"
 pin-project = "0.4.27"
 tracing = "0.1.24"
 tracing-futures = "0.2.5"

tower-fallback/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 
 [dependencies]
 tower = "0.4"
-futures-core = "0.3.6"
+futures-core = "0.3.13"
 pin-project = "0.4.27"
 tracing = "0.1"