Stop jarsigning

[akurtakov]

PGP sign is enough, simrel no longer requires jarsigning and build becomes faster and more stable without the network roadtrips caused by eclipse-jarsigner.

[github-actions]

Test Results

  321 files    321 suites   49m 15s ⏱️
  678 tests   658 ✅ 18 💤 1 ❌ 1 🔥
2 034 runs  1 978 ✅ 54 💤 1 ❌ 1 🔥

For more details on these failures and errors, see this check.

Results for commit 9f6fe43.

♻️ This comment has been updated with latest results.

[HannesWell]

@laeubi are you fine with this?
I think it's worth a try.

[laeubi]

I have no concerns.

[akurtakov]

Merging in this case.

[HannesWell]

Since this change, when updating to the latest snapshots of m2e I always get the message that the m2e artifacts are unsigned.
I don't know why this is the case, but it's bad and unless we can fix this quickly I contemplate to revert this for the release I plan to do this evening.

[akurtakov]

I have just installed everything from the snapshots repo and didn't get warnings and looking at https://www.eclipse.org/downloads/download.php?file=/technology/m2e/snapshots/latest/artifacts.xml.xz I see pgp.signatures so please share exactly which bundles are unsigned for you.

[HannesWell]

After doing another update I didn't get a corresponding message.
Looks like false alarm. Sorry for the disturbance!