fix: bump deck to handle Certificate updates in Konnect sync properly

[czeslavo]

What this PR does / why we need it:

Bumps deck to a version that fixes #4384 (in this particular commit). Propagates IsKonnect flag when creating diff.Syncer.

The Certificate update case is now covered in deck's integration tests.

Which issue this PR fixes:

Closes #4384.

Special notes for your reviewer:

PR Readiness Checklist:

Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

Patch coverage: 100.0% and project coverage change: -0.1% ⚠️

Comparison is base (5731f92) 65.9% compared to head (ca26a55) 65.9%.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #4400     +/-   ##
=======================================
- Coverage   65.9%   65.9%   -0.1%     
=======================================
  Files        158     158             
  Lines      18274   18279      +5     
=======================================
- Hits       12058   12048     -10     
- Misses      5478    5492     +14     
- Partials     738     739      +1     

Files Changed	Coverage Δ
internal/dataplane/sendconfig/dbmode.go	72.2% <100.0%> (+2.8%)	⬆️
internal/dataplane/sendconfig/strategy.go	100.0% <100.0%> (ø)

... and 2 files with indirect coverage changes

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[github-actions]

The backport to release/2.10.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-release/2.10.x release/2.10.x
# Navigate to the new working tree
cd .worktrees/backport-release/2.10.x
# Create a new branch
git switch --create backport-4400-to-release/2.10.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 4b8dc3edee9996c6dd33cdd4aaf80fe9a4539cb9
# Push it to GitHub
git push --set-upstream origin backport-4400-to-release/2.10.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-release/2.10.x

Then, create a pull request where the base branch is release/2.10.x and the compare/head branch is backport-4400-to-release/2.10.x.