bump spire to latest 1.5.x version

[JoeMcGuire98]

Proposed changes

Bump spire to latest minor versions since we're still working on getting image pulls for 1.6.x working reliably

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• [x] I have read the CONTRIBUTING doc
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked that all unit tests pass after adding my changes
• [x] I have updated necessary documentation
• [x] I have rebased my branch onto main
• [x] I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

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