[Do Not Merge] ci: don't care about chekcout error

Signed-off-by: Akira Moroo <retrage01@gmail.com>

Author: retrage

.github/workflows/tests.yaml

@@ -16,6 +16,7 @@ jobs:
     steps:
       - name: Code checkout
         uses: actions/checkout@v4
+        continue-on-error: true
         with:
           fetch-depth: 0
           clean: false