Bump bb8 version to 0.8.6

Author: djc

bb8/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bb8"
-version = "0.8.5"
+version = "0.8.6"
 edition = "2021"
 rust-version = "1.70"
 description = "Full-featured async (tokio-based) connection pool (like r2d2)"