Bump flexi_logger from 0.25.6 to 0.27.2 in /src/agent

Dependabot couldn't find the original pull request head commit, a5f9069.

Author: dependabot[bot]

src/agent/Cargo.lock

@@ -80,7 +80,7 @@ azure_storage_blobs = { version = "0.15", default-features = false, features = [
     "enable_reqwest",
 ] }
 
-flexi_logger = "0.25"
+flexi_logger = "0.27"
 schemars = { version = "0.8.12", features = ["uuid1"] }
 
 [dev-dependencies]