This is related to dtcenter/MET#2297

Describe the Task

Warnings have appeared in GHA runs that need to be resolved. This involves:

1. Modifying all GitHub Actions workflow files (found in .github/workflows) to:

• Update version of actions/checkout to v3
• Update version of actions/setup-python to v4
• Update version of actions/upload-artifact to v3
• Update version of actions/download-artifact to v3
• Update version of actions/github-script to v6

Example:
Previous:
- uses: actions/checkout@v2
New:
- uses: actions/checkout@v3

2. Modify all scripting logic in GitHub Actions workflows (this may be in workflow YAML files or in scripts that are called by a workflow) to:

• Change use of ::set-output to use >> $GITHUB_OUTPUT

Example:
Previous:
echo ::set-output name=run_compile::$run_compile
New:
echo "run_compile=${run_compile}" >> $GITHUB_OUTPUT

Time Estimate

A few hours including confirming full test suite run does not include any more warnings

Sub-Issues

Consider breaking the task down into sub-issues.

• Add a checkbox for each sub-issue here.

Relevant Deadlines

ASAP

Funding Source

NONE

Define the Metadata

Assignee

• Select engineer(s) or no engineer required
• Select scientist(s) or no scientist required

Labels

• Select component(s)
• Select priority
• Select requestor(s)

Projects and Milestone

• Select Repository and/or Organization level Project(s) or add alert: NEED PROJECT ASSIGNMENT label
• Select Milestone as the next official version or Future Versions

Define Related Issue(s)

Consider the impact to the other METplus components. -- Issues will be needed for each other METplus component that uses GHA

• METplus, MET, METdataio, METviewer, METexpress, METcalcpy, METplotpy

Task Checklist

See the METplus Workflow for details.

• Complete the issue definition above, including the Time Estimate and Funding Source.
• Fork this repository or create a branch of develop.
  Branch name: feature_<Issue Number>_<Description>
• Complete the development and test your changes.
• Add/update log messages for easier debugging.
• Add/update unit tests.
• Add/update documentation.
• Add any new Python packages to the METplus Components Python Requirements table.
• Push local changes to GitHub.
• Submit a pull request to merge into develop.
  Pull request: feature <Issue Number> <Description>
• Define the pull request metadata, as permissions allow.
  Select: Reviewer(s) and Linked issues
  Select: Repository level development cycle Project for the next official release
  Select: Milestone as the next official version
• Iterate until the reviewer(s) accept and merge your changes.
• Delete your fork or branch.
• Close this issue.