chore(deps): update couchbase/server docker tag to v8

[Fameing]

This PR contains the following updates:

Package	Update	Change
couchbase/server	major	7.6.9 → 8.0.0

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Warning

Some dependencies could not be looked up. Check the warning logs for more information.

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Configuration

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This PR has been generated by Renovate Bot.

Summary by CodeRabbit

Chores

• Updated the default embedded Couchbase Docker image from version 7.6.9 to 8.0.0.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.11%. Comparing base (90cf3a5) to head (a8c72e1).
⚠️ Report is 5 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff               @@
##             develop    #2782       +/-   ##
==============================================
+ Coverage      82.36%   98.11%   +15.75%     
+ Complexity       694       13      -681     
==============================================
  Files            205        4      -201     
  Lines           3135       53     -3082     
  Branches         146        0      -146     
==============================================
- Hits            2582       52     -2530     
+ Misses           484        1      -483     
+ Partials          69        0       -69     

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[coderabbitai]

📝 Walkthrough

Walkthrough

The Couchbase Docker image default version is updated from 7.6.9 to 8.0.0 across the README documentation and CouchbaseProperties configuration class with no other logic or API changes.

Changes

Cohort / File(s)	Summary
Couchbase Version Update embedded-couchbase/README.adoc, embedded-couchbase/src/main/java/com/playtika/testcontainer/couchbase/CouchbaseProperties.java	Updated default Docker image version from couchbase/server:7.6.9 to couchbase/server:8.0.0

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A version bump, so clean and bright,
From seven-six to eight, what a delight!
Couchbase marches forward, strong and true,
Our containers now run something new! 🚀

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: updating the Couchbase server Docker image from version 7.6.9 to 8.0.0.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch renovate/couchbase-server-8.x

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