ci: update rust version from 1.69.0 to 1.78.0

[DeepakBomjan]

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Checklist

• I have performed a self-review of my own code
• I have documented my code in accordance with the documentation guidelines
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
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• I have added version bump label on PR.

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