Adds `GlSparklineChart.connectNulls` which allows connecting
the sparkline across null points.

chore(deps): update dependency node to v20.15.1

See merge request !4386



Merged-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Co-authored-by: GitLab Renovate Bot <gitlab-bot@gitlab.com>

chore(deps): update babel to ^7.24.8

See merge request !4396



Merged-by: Lukas 'ai-pi' Eipert <leipert@gitlab.com>
Approved-by: Lukas 'ai-pi' Eipert <leipert@gitlab.com>
Co-authored-by: GitLab Renovate Bot <gitlab-bot@gitlab.com>

build: set CC environment variable to gcc

See merge request !4398



Merged-by: Peter Hegman <phegman@gitlab.com>
Approved-by: Peter Hegman <phegman@gitlab.com>
Co-authored-by: Paul Gascou-Vaillancourt <paul.gascvail@gmail.com>

feat(GlSparklineChart): Add `connectNulls` prop

See merge request !4393



Merged-by: Simon Knox <simon@gitlab.com>
Approved-by: Andrew Fontaine <afontaine@gitlab.com>
Co-authored-by: Alex Pennells <apennells@gitlab.com>

# [86.11.0](v86.10.1...v86.11.0) (2024-07-16)

### Features

* **GlSparklineChart:** Add `connectNulls` prop ([61d8a7cb](61d8a7cb))