8290000: Bump macOS GitHub actions to macOS 11

[gdams]

macOS 10.15 has been deprecated for some time and will be removed completely on August 30th. See https://github.com/actions/virtual-environments#available-environments and actions/runner-images#5583 for context.

This PR doesn't apply cleanly because it was added to the GitHub actions rewrite in tip. As it's unlikely that I will have a backported rewrite by August 30th my preference is to backport this way round.

---

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

Issue

• JDK-8290000: Bump macOS GitHub actions to macOS 11

Reviewers

• Christoph Langer (@RealCLanger - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev pull/1297/head:pull/1297
$ git checkout pull/1297

Update a local copy of the PR:
$ git checkout pull/1297
$ git pull https://git.openjdk.org/jdk11u-dev pull/1297/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1297

View PR using the GUI difftool:
$ git pr show -t 1297

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/1297.diff

[RealCLanger]

Makes sense. Let's see if the GHA builds remain green. 😄

[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 backport pull request has now been updated with issue from the original commit.

[openjdk]

@gdams This change now passes all automated pre-integration checks.

After integration, the commit message for the final commit will be:

8290000: Bump macOS GitHub actions to macOS 11

Reviewed-by: clanger

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 13 new commits pushed to the master branch:

• d647021: 8283624: Create an automated regression test for RFE-4390885
• 9796aac: 8223543: [TESTBUG] Regression test java/awt/Graphics2D/DrawString/LCDTextSrcEa.java has issues
• 3210c99: 8283245: Create a test for JDK-4670319
• 7318cdc: 8221871: javadoc should not set role=region on
  elements
• 93666ae: 8218413: make reconfigure ignores configure-time AUTOCONF environment variable
• 954d57a: 8287432: C2: assert(tn->in(0) != __null) failed: must have live top node
• 9cf9879: 8267880: Upgrade the default PKCS12 MAC algorithm
• e80c7e1: 8238268: Many SA tests are not running on OSX because they do not attempt to use sudo when available
• 8871303: 8282933: Create a test for JDK-4529616
• 1ab3f82: 8283507: Create a regression test for RFE 4287690
• ... and 3 more: https://git.openjdk.org/jdk11u-dev/compare/5f79e3ba8a06694f1445c02aca19445c567d2c9c...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change. Possible candidates are the reviewers of this PR (@RealCLanger) but any other Committer may sponsor as well.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[mlbridge]

Webrevs

• 00: Full (7e8da8ad)

[gdams]

/integrate

[openjdk]

@gdams
Your change (at version 7e8da8a) is now ready to be sponsored by a Committer.

[RealCLanger]

/sponsor

[openjdk]

Going to push as commit ac89673.
Since your change was applied there have been 13 commits pushed to the master branch:

• d647021: 8283624: Create an automated regression test for RFE-4390885
• 9796aac: 8223543: [TESTBUG] Regression test java/awt/Graphics2D/DrawString/LCDTextSrcEa.java has issues
• 3210c99: 8283245: Create a test for JDK-4670319
• 7318cdc: 8221871: javadoc should not set role=region on
  elements
• 93666ae: 8218413: make reconfigure ignores configure-time AUTOCONF environment variable
• 954d57a: 8287432: C2: assert(tn->in(0) != __null) failed: must have live top node
• 9cf9879: 8267880: Upgrade the default PKCS12 MAC algorithm
• e80c7e1: 8238268: Many SA tests are not running on OSX because they do not attempt to use sudo when available
• 8871303: 8282933: Create a test for JDK-4529616
• 1ab3f82: 8283507: Create a regression test for RFE 4287690
• ... and 3 more: https://git.openjdk.org/jdk11u-dev/compare/5f79e3ba8a06694f1445c02aca19445c567d2c9c...master

Your commit was automatically rebased without conflicts.

[openjdk]

@RealCLanger @gdams Pushed as commit ac89673.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.