Update rand 0.8 as well (dev-dependency only)

.cargo/audit.toml

@@ -3,5 +3,4 @@ ignore = [
     "RUSTSEC-2024-0370", # proc-macro-error is unmaintained, used by libcrux
     "RUSTSEC-2024-0436", # paste is unmaintained, used by libsignal-bridge
     "RUSTSEC-2025-0141", # bincode is unmaintained, used by zkgroup
-    "RUSTSEC-2026-0097", # The older version of rand is only used as a dev-dependency
 ]

Cargo.lock

@@ -3634,7 +3634,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
 dependencies = [
  "phf_shared",
- "rand 0.8.5",
+ "rand 0.8.6",
 ]
 
 [[package]]
@@ -4048,9 +4048,9 @@ checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "5ca0ecfa931c29007047d1bc58e623ab12e5590e8c7cc53200d5202b69266d8a"
 dependencies = [
  "rand_core 0.6.4",
 ]