ci: python version changed to 3.x

.github/workflows/ci-conan.yml

@@ -202,7 +202,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.8"
+          python-version: 3.x
       - name: Install Ninja
         shell: bash
         run: |
@@ -260,7 +260,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.8"
+          python-version: 3.x
       - name: Install Conan
         shell: bash
         run: |

.github/workflows/ci-formatting.yml

@@ -29,10 +29,10 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python 3.8
+      - name: Set up Python 3.12
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.x
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip

.github/workflows/ci-test-package-cmake.yml

@@ -195,7 +195,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.8"
+          python-version: 3.x
       - name: Install Ninja
         shell: bash
         run: |

.github/workflows/codeql.yml

@@ -97,7 +97,7 @@ jobs:
       if: matrix.language == 'cpp'
       uses: actions/setup-python@v5
       with:
-        python-version: "3.8"
+        python-version: 3.x
     - name: Conan build
       if: matrix.language == 'cpp'
       run: |