RUST_NIGHTLY env variable no more needed

Author: yogh333

.github/workflows/build_with_current_nightly.yml

@@ -32,7 +32,6 @@ jobs:
           BUILD_DEVICE_NAME="$(echo ${{ matrix.device }})"
           BIN_DIR_NAME="$(echo ${{ matrix.device }} | sed 's/nanosplus/nanos2/')"
           cd app-boilerplate
-          RUST_NIGHTLY=nightly
           cargo ledger build ${{ matrix.device }}
       
       #- name: Upload binary artifacts

.github/workflows/reusable_build_all_apps.yml

@@ -139,9 +139,9 @@ jobs:
                 build_directory=$(ledger-manifest --output-build-directory ledger_app.toml)
                 cd $build_directory
                 # Required as patch has a different version from what is locked in Cargo.lock
-                cargo +$RUST_NIGHTLY update include_gif
-                cargo +$RUST_NIGHTLY update ledger_secure_sdk_sys
-                cargo +$RUST_NIGHTLY update ledger_device_sdk
+                cargo update include_gif
+                cargo update ledger_secure_sdk_sys
+                cargo update ledger_device_sdk
                 device=$(echo ${{ matrix.device }} | sed 's/+/plus/')
                 echo "Build for "$device
                 cargo ledger build $device