ci: Install ca-certificates in Debian Testing pre-checkout setup

The debian:testing-slim image no longer includes ca-certificates by
default, causing the GitHub Actions checkout step to fail with an SSL
CA cert error when fetching the repository over HTTPS.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Xiaofeng Wang <henrywangxf@me.com>

diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index af83c01475fcf6624a02839ea561c741bddac1d3..25c88b3ab4101ad4035f43d9da29c3b223bcb652 100644 (file)
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -164,7 +164,7 @@ jobs:
             container-options: --security-opt seccomp=unconfined
             pre-checkout-setup: |
               apt-get update
-              apt-get install -y git
+              apt-get install -y git ca-certificates
             extra-packages: >-
               libssl-dev
             configure-options: >-