feat: upgrade chart to v1.5.2

[hbollon]

Description of the changes

Upgrade Longhorn chart to v1.5.2.
This upgrade is required to be able to add recurring jobs to automate filesystem trim.
Upgrading from v1.4.x to v1.5.x is straight forward and can be done in-place (cf. https://longhorn.io/docs/1.5.3/deploy/upgrade/longhorn-manager/ and tested on SKS cluster)

Breaking change

• No
• Yes (in the Helm chart(s)): indicate the chart, version & release note link
• Yes (in the module itself): give an explanation of the breaking change

Tests executed on which distribution(s)

• KinD
• AKS (Azure)
• EKS (AWS)
• Scaleway
• SKS (Exoscale)

[lentidas]

@hbollon I've had this upgrade on the pipeline for a while in the PR #12. While an upgrade in-place does work, there are some problems with the chart that prevent it from being deployed on a cluster bootstrap. I do not recall precisely what the problem was, but I remember they were expecting to fix it on the v1.6.0 of the chart. Do you mind if I test the new version on a bootstrap before merging this?

[lentidas]

This is the comment I made on the other PR about the issue, I'll need to restart my research about the issue to freshen up my memory... -> #12 (comment)

[hbollon]

I can wait until v1.6.0
My cluster is currently deployed on the pre-release/v3.1.0 branch where I merged my PRs to be able to keep working until the v3.1.0 (or v4 depending of the final changelog) is released 👍

[hbollon]

Closed in favor of #12