ci: when testing, install python 3.12, required by zephyr now

Zephyr now requires python 3.12, so install this version when testing
the SDK.

Also updated old naming and install python dependencies.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

Author: nashif

.github/workflows/ci.yml

@@ -343,19 +343,19 @@ jobs:
 
         if [ "${build_host_linux_x86_64}" == "y" ]; then
           MATRIX_TESTENVS+='{
-              "name": "ubuntu-20.04-x86_64",
+              "name": "ubuntu-24.04-x86_64",
               "runner": "zephyr-runner-v2-linux-x64-4xlarge",
-              "container": "ghcr.io/zephyrproject-rtos/ci:master",
+              "container": "ghcr.io/zephyrproject-rtos/ci:main",
               "bundle-host": "linux-x86_64",
               "bundle-archive": "tar.xz"
             },'
         fi
 
         if [ "${build_host_linux_aarch64}" == "y" ]; then
           MATRIX_TESTENVS+='{
-              "name": "ubuntu-20.04-aarch64",
+              "name": "ubuntu-24.04-aarch64",
               "runner": "zephyr-runner-v2-linux-arm64-4xlarge",
-              "container": "ghcr.io/zephyrproject-rtos/ci:master",
+              "container": "ghcr.io/zephyrproject-rtos/ci:main",
               "bundle-host": "linux-aarch64",
               "bundle-archive": "tar.xz"
             },'
@@ -1310,12 +1310,11 @@ jobs:
 
     steps:
     - name: Set up Python
-      if: ${{ runner.os == 'Windows' }}
       uses: actions/setup-python@v5
       with:
-        # Force Python 3.10 because the twister is not compatible with a Python
-        # version lower than 3.8 on Windows.
-        python-version: '3.10'
+        # Force Python 3.12, which is the minimum Python version supported by
+        # Zephyr and intended to be used with Zephyr SDK.
+        python-version: '3.12'
 
     - name: Set up test environment (Linux)
       if: ${{ runner.os == 'Linux' }}
@@ -1511,6 +1510,8 @@ jobs:
           # if running inside a virtual environment; otherwise, it is assumed
           # that the host already provides all the required dependencies.
           pip3 install -r ${ZEPHYR_ROOT}/scripts/requirements.txt
+        else
+          pip3 install -r ${ZEPHYR_ROOT}/scripts/requirements-actions.txt --require-hashes
         fi
 
     - name: Run test suites