Avoid set-env environment warning during build log generation

[danielmarbach]

GitHub Actions is deprecating set-env and add-path commands as outlined by

https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/

Therefore starting from version 2.273.5 of the runner GenerateBuildLogOutput outputs

Environment files should be used instead

https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-commands-for-github-actions#environment-files

Description

see above

Related Issue

Fixes #2421 and GitTools/actions#213.

Motivation and Context

How Has This Been Tested?

No, I edited the file online and did not try to build and intermediate package to a private feed and then use that in my code. We should be able though to see the impact on the build on this project. I'll update the screenshots as soon as this compiles

Screenshots (if appropriate):

Also happens on the build of this project, see

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[danielmarbach]

I wasn't sure if echo is needed or not. I assumed things will be echoed. Let me know if my assumptions are correct or not

[danielmarbach]

The new output

 Executing GenerateBuildLogOutput for 'GitHubActions'.
"GitVersion_Major=5" >> $GITHUB_ENV
"GitVersion_Minor=4" >> $GITHUB_ENV
"GitVersion_Patch=0" >> $GITHUB_ENV
"GitVersion_PreReleaseTag=PullRequest2422.136" >> $GITHUB_ENV
"GitVersion_PreReleaseTagWithDash=-PullRequest2422.136" >> $GITHUB_ENV
"GitVersion_PreReleaseLabel=PullRequest2422" >> $GITHUB_ENV
"GitVersion_PreReleaseNumber=136" >> $GITHUB_ENV
"GitVersion_WeightedPreReleaseNumber=30136" >> $GITHUB_ENV
"GitVersion_FullBuildMetaData=Branch.pull-2422-merge.Sha.0de23a7b9331d75d9ffa1a3eaf44db4dc2509800" >> $GITHUB_ENV
"GitVersion_MajorMinorPatch=5.4.0" >> $GITHUB_ENV
"GitVersion_SemVer=5.4.0-PullRequest2422.136" >> $GITHUB_ENV
"GitVersion_LegacySemVer=5.4.0-PullRequest2422-136" >> $GITHUB_ENV
"GitVersion_LegacySemVerPadded=5.4.0-PullRequest2422-0136" >> $GITHUB_ENV
"GitVersion_AssemblySemVer=5.4.0.0" >> $GITHUB_ENV
"GitVersion_AssemblySemFileVer=5.4.0.0" >> $GITHUB_ENV
"GitVersion_FullSemVer=5.4.0-PullRequest2422.136" >> $GITHUB_ENV
"GitVersion_InformationalVersion=5.4.0-PullRequest2422.136+Branch.pull-2422-merge.Sha.0de23a7b9331d75d9ffa1a3eaf44db4dc2509800" >> $GITHUB_ENV
"GitVersion_BranchName=pull/2422/merge" >> $GITHUB_ENV
"GitVersion_EscapedBranchName=pull-2422-merge" >> $GITHUB_ENV
"GitVersion_Sha=0de23a7b9331d75d9ffa1a3eaf44db4dc2509800" >> $GITHUB_ENV
"GitVersion_ShortSha=0de23a7" >> $GITHUB_ENV
"GitVersion_NuGetVersionV2=5.4.0-pullrequest2422-0136" >> $GITHUB_ENV
"GitVersion_NuGetVersion=5.4.0-pullrequest2422-0136" >> $GITHUB_ENV
"GitVersion_NuGetPreReleaseTagV2=pullrequest2422-0136" >> $GITHUB_ENV
"GitVersion_NuGetPreReleaseTag=pullrequest2422-0136" >> $GITHUB_ENV
"GitVersion_VersionSourceSha=08a43ede0b292c8ce2178b3d305587f151a2bdf4" >> $GITHUB_ENV
"GitVersion_CommitsSinceVersionSource=136" >> $GITHUB_ENV
"GitVersion_CommitsSinceVersionSourcePadded=0136" >> $GITHUB_ENV
"GitVersion_CommitDate=2020-10-09" >> $GITHUB_ENV
  INFO [10/09/20 7:59:51:84] Done writing 
Finished executing task: Build

[asbjornu]

Thanks for fixing this, @danielmarbach! ❤️

Thanks for fixing the build, @arturcic. 🙏

[danielmarbach]

You are most welcome