Replace deprecated `set-output` in GitHub Actions before 31st May 2023

[apupier]

https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

used in 2 places:

compas-scl-data-service/.github/workflows/release-project.yml

Line 37 in 62639a8

run: echo "##[set-output name=tagname;]$(echo ${GITHUB_REF##*/})"

compas-scl-data-service/.github/workflows/sonarcloud-analysis.yml

Line 55 in 2889118

echo "##[set-output name=sonar_opts;]$(echo -Dsonar.host.url=https://sonarcloud.io \

see also warning annotation:

relates to com-pas/contributing#65

[Sander3003]

@clepski is this one still be relevant?

[clepski]

The issue is still relevant, but the Github people postponed the removal of this feature for now as stated in the link. They dont give any deadline for when it will be removed.

Our telemetry shows significant usage of these commands. Given the number of impacted customers we are postponing the removal.

Eventually we will have to switch to the new command, but we will probably create a new PR for this, because this one is too outdated