Bump the flate2 dependency to help apt with updates from
buster to bullseye (Closes: 990436)
Index: cargo/Cargo.toml
===================================================================
--- cargo.orig/Cargo.toml
+++ cargo/Cargo.toml
@@ -68,7 +68,7 @@ version = "0.7.0"
 version = "0.2"
 
 [dependencies.flate2]
-version = "1.0.3"
+version = "1.0.13"
 features = ["zlib"]
 
 [dependencies.fs2]