ci: disable fail-fast on runtime image matrix

Author: KAJdev

.github/workflows/runtimes.yml

@@ -40,6 +40,9 @@ jobs:
     runs-on: ubuntu-latest
     needs: [test-runner]
     strategy:
+      # a transient registry/mirror failure on one leg must not cancel
+      # the other python versions
+      fail-fast: false
       matrix:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
@@ -78,6 +81,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [test-runner, build-gpu-base]
     strategy:
+      fail-fast: false
       matrix:
         kind: [task, queue, api]
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]