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

[Aurélien Pupier]

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