Update Rust crate flexi_logger to 0.29.0

Author: renovate[bot]

Cargo.toml

@@ -17,7 +17,7 @@ comma-v = { path = "comma-v" }
 # Temporarily the Git repo until the fix for
 # https://github.com/tokio-rs/console/issues/180 lands in a release.
 console-subscriber = { git = "https://github.com/tokio-rs/console" }
-flexi_logger = { version = "0.22.3", features = ["async", "colors"] }
+flexi_logger = { version = "0.29.0", features = ["async", "colors"] }
 flume = "0.10.10"
 git-cvs-fast-import-process = { path = "internal/process" }
 git-cvs-fast-import-state = { path = "internal/state" }