fix: run ami builds sequentially

Change the AMI build workflow to run the matrix entries sequentially
instead of all parallel. This should stop them getting cancelled due
to exceeding resource limits.

Fail fast has also been set to false so that if one of the metrix jobs
fails the others continue.

Signed-off-by: Richard Case <richard.case@outlook.com>

Author: richardcase

.github/workflows/build-ami.yml

@@ -36,8 +36,10 @@ permissions:
 jobs:
   buildandpublish:
     strategy:
-        matrix:
-            target: ['ubuntu-2204', 'ubuntu-2404', 'flatcar', 'rhel-8']
+      matrix:
+        target: ['ubuntu-2204', 'ubuntu-2404', 'flatcar', 'rhel-8']
+      max-parallel: 1
+      fail-fast: false
     name: Build and publish CAPA AMIs
     runs-on: ubuntu-latest
     steps: