Update tempfile crate to version 3.8

also remove double-dependency on this (was in dev too)

Cargo.toml

@@ -22,7 +22,7 @@ path = "src/main.rs"
 
 [dependencies]
 git2 = "0.20"
-tempfile = "3.3"
+tempfile = "3.8"
 url = "2.2"
 clap = { version = "4.1", features = ["derive"] }
 regex = "1"
@@ -48,6 +48,5 @@ default = []
 incremental = true
 
 [dev-dependencies]
-tempfile = "3.8"
 fs_extra = "1.3"
 temp-env = "0.3.6"