Move back to the LTS 2.8 version for more recent updates

[richturner]

The current 2.9 release is not an LTS version and hasn't been updated for quite some time. Switch to 2.8 LTS for recent bug and security fixes

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[richturner]

Tested on test3 and it's fine switching from 2.9.x to 2.8.x

[ebariaux]

We have an issue to move forward to 3.x LTS, can we do that rather than moving back ?
Isn't the test effort similar in both cases ?

[richturner]

Staying on the same major version seemed risk free, I briefly read the 3.x release notes and wasn't clear if there are breaking changes, could just try the 3.x LTS version and see what happens, will do that quickly and see if things seem to work

[richturner]

@ebariaux possibly superseeded by #29

[richturner]

@ebariaux I think until we finalise 3.2 release we should make this the latest release so we have the various patches that have been applied to 2.x

[ebariaux]

@richturner Makes sense, approved
Once released, I could do another round of load testing for good measure.