ci: fix rustc version to 1.69.0

[DeepakBomjan]

Description

Commit Message

type: commit message

see the guidelines for commit messages.

Changelog Entry

version: <log entry>

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
• I have run the unit tests
• I only have one commit (if not, squash them into one commit).
• I have a descriptive commit message that adheres to the commit message guidelines
• I have added version bump label on PR.

Please review the CONTRIBUTING.md file for detailed contributing guidelines.

[codecov-commenter]

Codecov Report

Merging #788 (9f1d14d) into main (1075482) will increase coverage by 0.00%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #788   +/-   ##
=========================================
  Coverage     70.10%   70.10%           
  Complexity      409      409           
=========================================
  Files           154      155    +1     
  Lines         13931    13945   +14     
  Branches        293      293           
=========================================
+ Hits           9766     9776   +10     
- Misses         4012     4016    +4     
  Partials        153      153           

Flag	Coverage Δ
rust	68.24% <ø> (+<0.01%)	⬆️

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see 7 files with indirect coverage changes