8310259: Pin msys2/setup-msys2 github action to a specific commit

[gdams]

8310259: Pin msys2/setup-msys2 github action to a specific commit
8309934: Update GitHub Actions to use JDK 17 for building jtreg

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8310259 needs maintainer approval
• JDK-8309934 needs maintainer approval

Issues

• JDK-8310259: Pin msys2/setup-msys2 github action to a specific commit (Task - P4 - Approved)
• JDK-8309934: Update GitHub Actions to use JDK 17 for building jtreg (Bug - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/2699/head:pull/2699
$ git checkout pull/2699

Update a local copy of the PR:
$ git checkout pull/2699
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/2699/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2699

View PR using the GUI difftool:
$ git pr show -t 2699

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/2699.diff

[bridgekeeper]

👋 Welcome back gdams! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issues from the original commit.