Explicitly use python 3.12 for CI

Stick with default (3.8) for ESP32 IDF 4.3, doesn't work with anything later

.github/workflows/ci-esp32.yml

@@ -39,7 +39,12 @@ jobs:
         git config --global --add core.autocrlf input
 
     - name: Checkout code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
+
+    - name: Setup python
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.idf_version == '4.3' && '3.8' || '3.12' }}
 
     - name: Configure environment
       shell: pwsh

.github/workflows/ci.yml

@@ -37,7 +37,12 @@ jobs:
         git config --global --add core.autocrlf input
 
     - name: Checkout code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
+
+    - name: Setup python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.12"
 
     - name: Configure environment
       shell: pwsh

.github/workflows/library.yml

@@ -49,7 +49,12 @@ jobs:
         git config --global --add core.autocrlf input
 
     - name: Checkout code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
+
+    - name: Setup python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.12"
 
     - name: Create library alias
       if: ${{ inputs.alias }}