fix(argocd-image-updater): Fix checksum/cmd-params and checksum/cm to prevent unnecessary diffs

[pgmgb]

Checklist:

• [x] I have bumped the chart version according to versioning
• [x] I have updated the documentation according to documentation
• [x] I have updated the chart changelog with all the changes that come with this pull request according to changelog.
• [x] Any new values are backwards compatible and/or have sensible default.
• [x] I have signed off all my commits as required by DCO.
• [ ] My build is green (troubleshooting builds).

[jmeridth]

question that is applicable here also: https://github.com/argoproj/argo-helm/pull/3027#issuecomment-2474083706

[pgmgb]

question that is applicable here also: #3027 (comment)

Please see https://github.com/argoproj/argo-helm/pull/3027#issuecomment-2475599065, as it is the same pattern.

[mkilchhofer]

I flip this PR back to "draft" mode as we should clarify your initial PR (for argo-cd) first.