Update Salsa to provisional commit

Author: MichaReiser

Cargo.lock

@@ -144,7 +144,7 @@ regex-automata = { version = "0.4.9" }
 rustc-hash = { version = "2.0.0" }
 rustc-stable-hash = { version = "0.1.2" }
 # When updating salsa, make sure to also update the revision in `fuzz/Cargo.toml`
-salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "29ab321b45d00daa4315fa2a06f7207759a8c87e", default-features = false, features = [
+salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "dbee2ad9de2a27196118c84b24b4d19b1dd3645e", default-features = false, features = [
     "compact_str",
     "macros",
     "salsa_unstable",