Merge pull request embassy-rs#3895 from embassy-rs/rust-update-184

Update to Rust 1.84

Author: Dirbaio

.github/ci/build-xtensa.sh

@@ -13,7 +13,7 @@ export CARGO_TARGET_DIR=/ci/cache/target
 export CARGO_NET_GIT_FETCH_WITH_CLI=true
 
 cargo install espup
-/ci/cache/cargo/bin/espup install --toolchain-version 1.83.0.1
+/ci/cache/cargo/bin/espup install --toolchain-version 1.84.0.0
 
 # Restore lockfiles
 if [ -f /ci/cache/lockfiles.tar ]; then

rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
-channel = "1.83"
+channel = "1.84"
 components = [ "rust-src", "rustfmt", "llvm-tools" ]
 targets = [
     "thumbv7em-none-eabi",