ci: Make distcheck not cancel jobs once one fails

It's pretty common that a specific distro fails the check, and since it
currently cancels the rest of the matrix, you have to fix it first
before seeing failures in other distros.

This enables the fail-fast option:
https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#jobsjob_idstrategyfail-fast

Author: yedayak

.github/workflows/ci.yaml

@@ -50,6 +50,7 @@ jobs:
             network: none
           - dist: fedoradev
           - dist: ubuntu14
+      fail-fast: false
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - uses: googleapis/release-please-action@5792afc6b46e9bb55deda9eda973a18c226bc3fc # v4.1.5