Upgrade Postgres docs use v12.6
What does this Merge Request do and why?
I figured that if v11 is already the default and we are already migrating to v12, this docs should be updated for that version
Merge Request checklist
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This change is backward compatible. If not, please include steps to communicate to our users. -
Tests added for new functionality. If not, please raise Issue to follow-up. -
Documentation added/updated, if needed. -
gdk doctor
test added, if needed. -
Add the ~highlight
label if this MR should be included in theCHANGELOG.md
.