CI: Bump NuttX version to 12.6 (#3684)

Author: no1wudi

.github/workflows/compilation_on_nuttx.yml

@@ -86,14 +86,14 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: apache/nuttx
-          ref: releases/12.4
+          ref: releases/12.6
           path: nuttx
 
       - name: Checkout NuttX Apps
         uses: actions/checkout@v4
         with:
           repository: apache/nuttx-apps
-          ref: releases/12.4
+          ref: releases/12.6
           path: apps
 
       - name: Checkout WAMR

.github/workflows/spec_test_on_nuttx.yml

@@ -131,14 +131,14 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: apache/nuttx
-          ref: ${{ matrix.target_config.target == 'xtensa' && '985d395b025cf2012b22f6bb4461959fa6d87645' || 'releases/12.4' }}
+          ref: ${{ matrix.target_config.target == 'xtensa' && '985d395b025cf2012b22f6bb4461959fa6d87645' || 'releases/12.6' }}
           path: nuttx
 
       - name: Checkout NuttX Apps
         uses: actions/checkout@v4
         with:
           repository: apache/nuttx-apps
-          ref: ${{ matrix.target_config.target == 'xtensa' && '2ef3eb25c0cec944b13792185f7e5d5a05990d5f' || 'releases/12.4' }}
+          ref: ${{ matrix.target_config.target == 'xtensa' && '2ef3eb25c0cec944b13792185f7e5d5a05990d5f' || 'releases/12.6' }}
           path: apps
 
       - name: Checkout WAMR
@@ -247,7 +247,7 @@ jobs:
         run: |
           kconfig-tweak --set-val CONFIG_INTERPRETERS_WAMR_STACKSIZE 25600
         working-directory: nuttx
-      
+
       - name: Enable WAMR interpreter/aot runtime for NuttX
         if: matrix.wamr_test_option.option != ''
         run: |
@@ -310,7 +310,7 @@ jobs:
         id: build_firmware_path
         run: |
           echo "firmware=$PWD/nuttx/nuttx" >> $GITHUB_OUTPUT
-      
+
       # for xtensa, use the espressif fork of qemu, which has esp32s3 support.
       - name: Install QEMU (xtensa)
         if: matrix.target_config.target == 'xtensa'