[samsung] Use secret API key (#14404)

Summary:
Copy of #14105.

Author: SS-JIA

.ci/scripts/setup-samsung-linux-deps.sh

@@ -11,7 +11,7 @@ set -ex
 
 download_ai_lite_core() {
   API_BASE="https://soc-developer.semiconductor.samsung.com/api/v1/resource/ai-litecore/download"
-  API_KEY="kn10SoSY3hkC-9Qny5TqD2mnqVrlupv3krnjLeBt5cY"
+  API_KEY=$SAMSUNG_AI_LITECORE_KEY
 
   VERSION="0.5"
   OS_NAME="Ubuntu 22.04"

.github/workflows/pull.yml

@@ -900,12 +900,14 @@ jobs:
     permissions:
       id-token: write
       contents: read
+    secrets: inherit
     with:
       runner: linux.2xlarge
       docker-image: ci-image:executorch-ubuntu-22.04-clang12-android
       submodules: 'recursive'
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
       timeout: 90
+      secrets-env: SAMSUNG_AI_LITECORE_KEY
       script: |
         set -ex
 
@@ -917,6 +919,7 @@ jobs:
         PYTHON_EXECUTABLE=python bash .ci/scripts/setup-linux.sh --build-tool "cmake"
 
         # Setup Samsung SDK (AI Lite Core) and install enn backend
+        export SAMSUNG_AI_LITECORE_KEY=$SECRET_SAMSUNG_AI_LITECORE_KEY
         source .ci/scripts/setup-samsung-linux-deps.sh
 
         # Test models serially