Use a non-broken diesel version

Author: weiznich

Cargo.toml

@@ -50,4 +50,4 @@ rustc-args = ["--cfg", "doc_cfg"]
 rustdoc-args = ["--cfg", "doc_cfg"]
 
 [patch.crates-io]
-diesel = { git = "https://github.com/diesel-rs/diesel", rev = "88129db" }
+diesel = { git = "https://github.com/diesel-rs/diesel", rev = "b878fed" }