Switch back GitHub Actions workflow to use current Tycho version

[HeikoKlare]

The Tycho version used in GitHub Actions workflow has been temporarily reverted to 4.0.8. This change switched back the Tycho version defined in the Tycho build itself.

Since recent PDE and Tycho changes that apply with this change of the Tycho version, the API filters for GCData and Display on MacOS are not necessary anymore and produce warnings due to being obsolete. Thus, this change also removes the according filters. The commit has been taken from as it semantically belongs to the Tycho version change (and is required to make the CI builds run successfully):

• Remove obsolete API filter for GCData and Display on MacOS #1478

⚠️ This PR is supposed to be merged once the issue discussed in eclipse-platform/eclipse.platform.releng.aggregator#2360 and reproduced via eclipse-tycho/tycho#4293 has been resolved or once we want to have SWT use latest Tycho again to further investigate the failures.

Supercedes and thus closes #1478

[github-actions]

Test Results

   483 files  ±0     483 suites  ±0   8m 32s ⏱️ -24s
 4 095 tests ±0   4 085 ✅ ±0   7 💤 ±0  3 ❌ ±0 
16 173 runs  ±0  16 080 ✅ ±0  90 💤 ±0  3 ❌ ±0 

For more details on these failures, see this check.

Results for commit 732b288. ± Comparison against base commit e03196c.

♻️ This comment has been updated with latest results.

[HeikoKlare]

I've experimentally changed this PR to use Tycho 4.0.10-SNAPSHOT, in order to validate that the reason for temporarily switching back to Tycho 4.0.8 (failures during testCompile on Linux/MacOS) has been resolved.

The builds now successfully pass that compilation step (@laeubi fyi).
They still fail, but for different, unrelated reasons:

• Linux: 3 tests failing in Test_org_eclipse_swt_browser_Browser #1564
• macOS: Remove obsolete API filter for GCData and Display on MacOS #1478

I guess there are no plans for releasing Tycho 4.0.10 soon? So would it make sense to upgrade the whole platform to use 4.0.10-SNAPSHOT, or should we maybe at least apply it to the GH actions builds of SWT?

[sratz]

I guess there are no plans for releasing Tycho 4.0.10 soon?

There are: eclipse-tycho/tycho#2455 (comment)

[laeubi]

I guess there are no plans for releasing Tycho 4.0.10 soon? So would it make sense to upgrade the whole platform to use 4.0.10-SNAPSHOT, or should we maybe at least apply it to the GH actions builds of SWT?

We should use 4.0.10-SNAPSHOT for platform to getting more confident that there are no regressions, so if you like just go ahead and upgrade the aggregator for a while, I'll then take care to release the version before the code freeze.

[HeikoKlare]

We should use 4.0.10-SNAPSHOT for platform to getting more confident that there are no regressions, so if you like just go ahead and upgrade the aggregator for a while, I'll then take care to release the version before the code freeze.

Alright, done: eclipse-platform/eclipse.platform.releng.aggregator#2520

[HeikoKlare]

I've changed this PR back to remove the explicit Tycho version specification and use the one of the parent POM again (which is now 4.0.10-SNAPSHOT).
I have also integrated the following change into this as otherwise MacOS builds will fail because of changes in API tools:

• Remove obsolete API filter for GCData and Display on MacOS #1478

For failing tests, see: #1564