chore(deps): use openthread fork with set_link_mode

Point to lexfrei/openthread#feat/add-set-link-mode which adds
the set_link_mode() method required for rx_on_when_idle support.

Upstream PR: esp-rs/openthread#50

Co-Authored-By: Claude <[email protected]>
Signed-off-by: Aleksei Sviridkin <[email protected]>

Author: lexfrei

rs-matter-embassy/Cargo.toml

@@ -21,8 +21,8 @@ rs-matter = { git = "https://github.com/sysgrok/rs-matter", branch = "next" }
 #rs-matter = { path = "../../rs-matter/rs-matter" }
 rs-matter-stack = { git = "https://github.com/ivmarkov/rs-matter-stack.git", branch = "next" }
 #rs-matter-stack = { path = "../../rs-matter-stack" }
-openthread = { git = "https://github.com/sysgrok/openthread.git" }
-#openthread = { version = "0.1", path = "../../../openthread/openthread" }
+# Fork with set_link_mode method: https://github.com/esp-rs/openthread/pull/50
+openthread = { git = "https://github.com/lexfrei/openthread", branch = "feat/add-set-link-mode" }
 nrf-sdc = { git = "https://github.com/alexmoon/nrf-sdc.git", rev = "11d5c3c3653af73b511133c2f8231f33eb0696f4" }
 nrf-mpsl = { git = "https://github.com/alexmoon/nrf-sdc.git", rev = "11d5c3c3653af73b511133c2f8231f33eb0696f4" }