ci: Use stable channel for RISCV devices (#1896)

.github/workflows/hil.yml

@@ -55,7 +55,7 @@ jobs:
         uses: dtolnay/rust-toolchain@v1
         with:
           target: ${{ matrix.target.rust-target }}
-          toolchain: nightly
+          toolchain: stable
           components: rust-src
       # Install the Rust toolchain for Xtensa devices:
       - if: contains(fromJson('["esp32", "esp32s2", "esp32s3"]'), matrix.target.soc)
@@ -103,7 +103,7 @@ jobs:
           # RISC-V devices:
           - soc: esp32c2
             runner: esp32c2-jtag
-            usb: ACM0
+            usb: USB2
           - soc: esp32c3
             runner: esp32c3-usb
             usb: ACM0
@@ -112,7 +112,7 @@ jobs:
             usb: ACM0
           - soc: esp32h2
             runner: esp32h2-usb
-            usb: ACM0
+            usb: USB0
           # Xtensa devices:
           - soc: esp32s2
             runner: esp32s2-jtag