Bump spring.boot.version to 3.4.5

[JimTharioAmazon]

Patch for CVE-2025-22235.

🔧 Type of changes

• new bid adapter
• bid adapter update
• new feature
• new analytics adapter
• new module
• module update
• bugfix
• documentation
• configuration
• dependency update
• tech debt (test coverage, refactorings, etc.)

✨ What's the context?

Bump spring.boot.version from 3.4.4 to 3.4.5 for CVE-2025-22235.

🧠 Rationale behind the change

Remove high CVE vulnerability.

🔎 New Bid Adapter Checklist

• verify email contact works
• NO fully dynamic hostnames
• geographic host parameters are NOT required
• direct use of HTTP is prohibited - implement an existing Bidder interface that will do all the job
• if the ORTB is just forwarded to the endpoint, use the generic adapter - define the new adapter as the alias of the generic adapter
• cover an adapter configuration with an integration test

🧪 Test plan

Unit tests and functional tests pass after this change.

🏎 Quality check

• [-] Are your changes following our code style guidelines?
• [N] Are there any breaking changes in your code?
• [-] Does your test coverage exceed 90%?
• [N] Are there any erroneous console logs, debuggers or leftover code in your changes?