chore(deps): update cfg-if requirement from 0.1.10 to 1.0.0 (#1023)

Updates the requirements on [cfg-if](https://github.com/alexcrichton/cfg-if) to permit the latest version.
- [Release notes](https://github.com/alexcrichton/cfg-if/releases)
- [Commits](rust-lang/cfg-if@0.1.10...1.0.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

tracing/Cargo.toml

@@ -30,7 +30,7 @@ edition = "2018"
 tracing-core = { path = "../tracing-core", version = "0.2", default-features = false }
 log = { version = "0.4", optional = true }
 tracing-attributes = { path = "../tracing-attributes", version = "0.2", optional = true }
-cfg-if = "0.1.10"
+cfg-if = "1.0.0"
 pin-project-lite = "0.1"
 
 [dev-dependencies]