Use at least 2GB heap to run org.eclipse.core.tests.resources

[iloveeclipse]

Should avoid OOM during tycho test execution on Jenkins.

See eclipse-platform/eclipse.platform.releng.aggregator#1463

[github-actions]

Test Results

     32 files   -      10       32 suites   - 10   32m 29s ⏱️ - 28m 48s
2 345 tests  - 1 433  2 338 ✔️  - 1 432  2 💤  -   1    5 ❌ ±0 
7 037 runs   - 4 300  7 016 ✔️  - 4 279  6 💤  - 21  15 ❌ ±0 

For more details on these failures, see this check.

Results for commit bfd7e10. ± Comparison against base commit bf89859.

This pull request removes 1433 tests.

org.eclipse.compare.tests.AsyncExecTests ‑ testCancelOnRequeue
org.eclipse.compare.tests.AsyncExecTests ‑ testQueueAdd
org.eclipse.compare.tests.AsyncExecTests ‑ testWorker
org.eclipse.compare.tests.CompareFileRevisionEditorInputTest ‑ testPrepareCompareInputWithNonLocalResourceTypedElements
org.eclipse.compare.tests.CompareUIPluginTest ‑ testFindContentViewerDescriptorForTextType_StreamAccessor
org.eclipse.compare.tests.CompareUIPluginTest ‑ testFindContentViewerDescriptor_TextType_NotStreamAccessor
org.eclipse.compare.tests.CompareUIPluginTest ‑ testFindContentViewerDescriptor_UnknownType
org.eclipse.compare.tests.ContentMergeViewerTest ‑ testFFFX
org.eclipse.compare.tests.ContentMergeViewerTest ‑ testFFTX
org.eclipse.compare.tests.ContentMergeViewerTest ‑ testFFXF
…

[iloveeclipse]

Closing in favour of eclipse-platform/eclipse.platform.releng.aggregator#1474