missing checkout in generate-matrix step

.github/workflows/ci-clang-tidy.yml

@@ -46,6 +46,7 @@ jobs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     runs-on: ubuntu-24.04
     steps:
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with:

.github/workflows/ci-conan.yml

@@ -44,6 +44,7 @@ jobs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     runs-on: ubuntu-24.04
     steps:
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with:

.github/workflows/ci-freestanding.yml

@@ -45,6 +45,7 @@ jobs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     runs-on: ubuntu-24.04
     steps:
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with:

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

@@ -49,6 +49,7 @@ jobs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     runs-on: ubuntu-24.04
     steps:
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with: