Bump regalloc2 to 0.7.0 (#6237)

* Bump RA2 to 0.7.0

* Certify the RA2 update

* Import the rustc-hash audit

* Updates for regalloc2

prtest:full

* Update tests

Cargo.lock

@@ -2577,12 +2577,13 @@ dependencies = [
 
 [[package]]
 name = "regalloc2"
-version = "0.6.1"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80535183cae11b149d618fbd3c37e38d7cda589d82d7769e196ca9a9042d7621"
+checksum = "af72b4ad16ae133417b3ab89ad5a179b5103f202a8aadeb7e8adcb530d319744"
 dependencies = [
- "fxhash",
+ "hashbrown 0.13.2",
  "log",
+ "rustc-hash",
  "serde",
  "slice-group-by",
  "smallvec",
@@ -2674,6 +2675,12 @@ version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ef03e0a2b150c7a90d01faf6254c9c48a41e95fb2a8c2ac1c6f0d2b9aefc342"
 
+[[package]]
+name = "rustc-hash"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
+
 [[package]]
 name = "rustix"
 version = "0.37.13"