ci: Always run build on develop branch (#13404)

Noticed this here:
https://github.com/getsentry/sentry-javascript/actions/runs/10417249817,
when merging a markdown-only PR into develop, CI will not fully run
there.

.github/workflows/build.yml

@@ -127,7 +127,9 @@ jobs:
     runs-on: ubuntu-20.04
     timeout-minutes: 15
     if: |
-      needs.job_get_metadata.outputs.changed_any_code == 'true' &&
+      needs.job_get_metadata.outputs.changed_any_code == 'true' ||
+      needs.job_get_metadata.outputs.is_develop == 'true' ||
+      needs.job_get_metadata.outputs.is_release == 'true' ||
       (needs.job_get_metadata.outputs.is_gitflow_sync == 'false' && needs.job_get_metadata.outputs.has_gitflow_label == 'false')
     steps:
       - name: Check out base commit (${{ github.event.pull_request.base.sha }})