bump internment 0.7 -> 0.8

Summary: i would say that it's D57179423 that's responsible for the `buck2-unsorted-*` failures (e.g. https://www.internalfb.com/intern/test/281475113726765?ref_report_id=0)

Reviewed By: IanChilds

Differential Revision: D57211465

fbshipit-source-id: c798466f12d20ecab6fceb9d7fa46b3d42f95ed3

Cargo.toml

@@ -181,7 +181,7 @@ indenter = "0.3.3"
 indexmap = { version = "1.9.1", features = ["serde-1"] }
 indoc = "2.0.2"
 inferno = { version = "0.11.11", default-features = false }
-internment = { version = "0.7", features = ["arc"] }
+internment = { version = "0.8", features = ["arc"] }
 inventory = "0.3.8"
 ipnetwork = "0.20.0"
 is_proc_translated = "0.1.1"