fix: bump fixture rquickjs deps to 0.12 to match workspace

The native_math and extended_runtime fixtures depended on rquickjs 0.11,
but hyperlight-js-runtime uses 0.12 after the rebase. This caused a
'multiple different versions of crate rquickjs_core' compile error when
linking the extended_runtime binary.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Simon Davies <simongdavies@users.noreply.github.com>

Author: simongdavies

src/hyperlight-js-runtime/tests/fixtures/extended_runtime/Cargo.lock

@@ -14,7 +14,7 @@ path = "src/main.rs"
 [dependencies]
 hyperlight-js-runtime = { path = "../../.." }
 native-math = { path = "../native_math" }
-rquickjs = { version = "0.11", default-features = false, features = ["bindgen", "futures", "macro", "loader"] }
+rquickjs = { version = "0.12", default-features = false, features = ["bindgen", "futures", "macro", "loader"] }
 
 # anyhow is only needed for the native CLI entry point, not the hyperlight guest
 [target.'cfg(not(hyperlight))'.dependencies]