github: revert actions/checkout for ubuntu 18.04

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/.github/workflows/cibuild.yml b/.github/workflows/cibuild.yml
index 38dfb266e7d31ab613f5baa61dd3f70a402fdb76..9eeaba049519f52d3d2b05742e0ed72fb23c3e30 100644 (file)
--- a/.github/workflows/cibuild.yml
+++ b/.github/workflows/cibuild.yml
@@ -135,7 +135,7 @@ jobs:
       image: ${{ matrix.image }}
     steps:
       - name: Repository checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v1
       - name: Ubuntu setup
         run: .github/workflows/cibuild-setup-ubuntu.sh
       - name: Configure