Unreachable notification step in iOS SDK CI

[pi-alexander-popel]

The Build failure Post to Slack step checks for the previous step's failure instead of the build failure. This is likely not indentional, and also means that the step will never run since the previous step only runs on tag pushes, and the step in question only runs on PRs.

optable-ios-sdk/.github/workflows/ios-sdk-ci.yml

Lines 123 to 125 in ca311d9

	- name: Build failure Post to Slack
	uses: slackapi/slack-github-action@v2.0.0
	if: ${{ failure() && github.event_name == 'pull_request' }}

The full fix would have to add the if: always() conditional to the job iself, and then check needs.<job_id>.result in the job steps.