quick fix

.github/actions/dump-disk-info/action.yaml

@@ -2,7 +2,6 @@ name: Dump disk space info
 description: Help debug running out of disk space on github CI
 runs:
  using: "composite"
- if: ${{ runner.os == 'Linux' }}
  steps:
  - name: Collect disk info
  # Unfortunately current syntax for github wrapper actions only work for
@@ -13,6 +12,7 @@ runs:
  # is run and after the job is run regardless if the job succeeds or
  # fails.
  uses: pyTooling/Actions/with-post-step@v0.4.5
+ if: ${{ runner.os == 'Linux' }}
  with:
  main: |-
  exec ./scripts/dump_diskspace_info.sh