Sub-Stage: Testing became less relevant

Hi Team,

Based on feedback received from EMEA solution architects during solution studio training, that "Testing" sub-stage in "Innovate" stage contains only part of testing activities:

1. Unit Testing and biggest amount of testing scripts creation are done in Release Development Sub-stage

2. SIT, End-to-end testing execution + test scripts creation for UAT, Performance, Regression Testing is done in "Testing" Sub-stage

3. UAT, Performance, Regression Testing is done in "Release" Stage, "Production Readiness and Deployment" sub-stage

As an idea, maybe we should refine sub-stages and keep in Innovate primary sprint based activities and in sprint testing and in Release keep everything related to Release readiness [technically move all items from Testing sub-stage to "Release" Stage, "Production Readiness and Deployment".