simplify the Azure CI/CD pipeline configuration

[chrimesdev]

Description

Simplify the Azure CI/CD pipeline configuration to allow for a smoother and quicker release process. Update package dependencies to the latest versions.

Related issue

n/a

Checklist

• [x] Tested against the NHS.UK frontend testing policy (Resolution, Browser & Accessibility)
• [x] Code follows the NHS.UK frontend coding standards
• [x] Documentation
• [x] Version number increase (using SEMVER)
• [x] CHANGELOG entry
• [ ] Validated on staging environment (only required for releases)