Bump NGINX Ingress to 1.14.3

What does this MR do?

Update NGINX Ingress to 1.14.3

• Update NGINX Ingress controller image from 1.11.8 to 1.14.3.
• Update NGINX Ingress chart from 4.12.3 to 4.14.3.

Closes https://gitlab.com/gitlab-org/charts/gitlab/-/work_items/6265

Changelog: changed

Related issues

Closes https://gitlab.com/gitlab-org/charts/gitlab/-/work_items/6265+s

Related MRs and documentation

• Update of our NGINX Ingress fork (to build NGINX Ingress images used in UBI and FIPS deployments): gitlab-org/cloud-native/charts/gitlab-ingress-nginx!34 (merged)
• Mirroring of the upstream 1.14.3 image to the GitLab registry (used by default/debian deployments): gitlab-org/cloud-native/mirror/images!15 (merged)
• Working with our forked NGINX Ingress chart: https://gitlab.com/gitlab-org/charts/gitlab/-/blob/master/doc/development/nginx.md

Author checklist

For general guidance, please follow our Contributing guide.

Required

For anything in this list which will not be completed, please provide a reason in the MR discussion.

• Merge Request Title and Description are up to date, accurate, and descriptive.
• MR targeting the appropriate branch.
• MR has a green pipeline.
• Documentation created/updated.
• Tests added/updated, and test plan for scenarios not covered by automated tests.
• Equivalent MR/issue for omnibus-gitlab opened.

Reviewers checklist

• MR has a green pipeline on https://gitlab.com/gitlab-org/charts/gitlab.
• Consider downstream impact to the Operator, as per evaluating impact from changes to GitLab chart.