ci: replace crypted files with more bollocks before checking

Changed files
+3
.github
workflows
+3
.github/workflows/build.yaml
···
- name: Checkout
uses: actions/checkout@v3
+
- name: Replace .cry files with some bollocks
+
run: find . -name "*.cry" -execdir bash -c 'echo some bollocks > {}' \;
+
- name: Install Nix
uses: DeterminateSystems/nix-installer-action@v4
with: