Use latest CI image for basic checks

Signed-off-by: Spencer Wilson <[email protected]>

.github/workflows/basic.yml

@@ -10,7 +10,7 @@ jobs:
   stylecheck:
     name: Check code formatting
     runs-on: ubuntu-latest
-    container: openquantumsafe/ci-ubuntu-focal-x86_64:latest
+    container: openquantumsafe/ci-ubuntu-latest:latest
     steps:
       - name: Checkout code
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # pin@v4
@@ -24,24 +24,16 @@ jobs:
   upstreamcheck:
     name: Check upstream code is properly integrated
     runs-on: ubuntu-latest
-    container: openquantumsafe/ci-ubuntu-focal-x86_64:latest
+    container: openquantumsafe/ci-ubuntu-latest:latest
     steps:
-      - name: Setup nix
-        uses: cachix/install-nix-action@v26
-      - name: Setup jasmin-compiler
-        run: |
-          nix-channel --add https://nixos.org/channels/nixos-23.11 nixpkgs && \
-          nix-channel --update && nix-env -iA nixpkgs.jasmin-compiler
       - name: Checkout code
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # pin@v4
       - name: Configure
         run: |
           git config --global user.name "ciuser" && \
           git config --global user.email "[email protected]" && \
           git config --global --add safe.directory . && \
-          echo "LIBOQS_DIR=$PWD" >> "$GITHUB_ENV" && \
-          cd scripts/copy_from_upstream && \
-          ! pip3 install --require-hashes -r requirements.txt 2>&1 | grep -i ERROR
+          echo "LIBOQS_DIR=$PWD" >> "$GITHUB_ENV"
       - name: Verify copy_from_upstream state after copy
         working-directory: 'scripts/copy_from_upstream'
         run: |
@@ -57,7 +49,7 @@ jobs:
     name: Check that code passes a basic build
     needs: [ stylecheck, upstreamcheck ]
     runs-on: ubuntu-latest
-    container: openquantumsafe/ci-ubuntu-focal-x86_64:latest
+    container: openquantumsafe/ci-ubuntu-latest:latest
     env:
       KEM_NAME: ml_kem_768
       SIG_NAME: ml_dsa_65