chore(deps): bump icicle-core from v1.5.1 to v2.8.0

Bumps [icicle-core](https://github.com/ingonyama-zk/icicle) from v1.5.1 to v2.8.0.
- [Release notes](https://github.com/ingonyama-zk/icicle/releases)
- [Commits](ingonyama-zk/icicle@v1.5.1...aacec3f)

---
updated-dependencies:
- dependency-name: icicle-core
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pcs/Cargo.toml

@@ -21,7 +21,7 @@ ark-std = { workspace = true }
 derivative = { workspace = true }
 displaydoc = { workspace = true }
 icicle-bn254 = { git = "https://github.com/ingonyama-zk/icicle.git", tag = "v1.5.1", optional = true, features = ["arkworks"] }
-icicle-core = { git = "https://github.com/ingonyama-zk/icicle.git", tag = "v1.5.1", optional = true }
+icicle-core = { git = "https://github.com/ingonyama-zk/icicle.git", tag = "v2.8.0", optional = true }
 icicle-cuda-runtime = { git = "https://github.com/ingonyama-zk/icicle.git", tag = "v1.5.1", optional = true }
 itertools = { workspace = true, features = ["use_alloc"] }
 jf-utils = { path = "../utilities", default-features = false }