Fixes included in this RC:
- Update pipelines to 1.7.0 #1997
- Update KFP Tekton for version 1.0.0 #2006
- Use MPI operator tag v0.3.0 #2019
- Update manifests for Katib 0.12.0-rc.1 release #2008
- Update Notebooks WG manifests from RC1 #2021
- feat: add seldon permissions to default-editor #2013
- git: Ignore Vim files #2020
- Add 1.4 release information #1974
- docs: fix fmt #1992
- handbook: Allocate 3 weeks for distribution testing #1996
- Update README for pipelines 1.7.0 #1999
Fixes included from the previous RC0