Try out version increment fix for SWT

[HannesWell]

Try out:

• [Build] Use own cache in Version-Increment workflow eclipse.platform.releng.aggregator#3157

[github-actions]

Test Results

   545 files  + 6     545 suites  +6   27m 38s ⏱️ - 1m 58s
 4 403 tests +37   4 385 ✅ +35   18 💤 +3  0 ❌  - 1 
16 733 runs  +37  16 593 ✅ +35  140 💤 +3  0 ❌  - 1 

Results for commit 43bf87e. ± Comparison against base commit e2cbda9.