Update Cluster Toolkit Version to 1.62.2

[SikaGrr]

Fixes / Features

• Update Cluster Toolkit Version from 1.57.1 to 1.62.2

Testing / Documentation

Tested by running a full cluster/workload creation/deletion workflow:

python3 xpk.py cluster create   --cluster=a3mega   --device-type=h100-mega-80gb-8
python3 xpk.py workload create  --workload=test-echo --command="echo goodbye"   --cluster=a3mega --device-type h100-mega-80gb-8
python3 xpk.py workload delete   --workload=test-echo   --cluster=a3mega
python3 xpk.py cluster delete     --cluster=a3mega

Confirmed Cluster Toolkit v1.62.2. was used, workflow executed correctly, and no errors occurred.

• [ y ] Tests pass
• [ y ] Appropriate changes to documentation are included in the PR

[sharabiani]

I wouldn't rely on cluster create test only and I would do a full cycle of manual tests. Cluster create, workload create, workload delete, cluster delete.

CT is not guaranteed to have backward compatibility and some new default values for gke-cluster can cause issues for workload scheduling.

There is also a chance that running "cluster create" again on an existing cluster (created via an older version) can cause cluster recreation or other unxpected behaviours. This is a breaking change and we should fix it or reflect it in the description for users.

[SikaGrr]

Re-tested to confirm full workflow succeeds and no issues with cluster re-creation.