docs: revise INSTALL.md with updated Maven setup

[he1l0world]

Description

This PR updates the Maven installation instructions in INSTALL.md.
While following the setup steps to build CloudStack locally as a new contributor, I found that the provided download link for Maven 3.9.9 is no longer active, and the version itself is not listed on the official Apache Maven distribution site.
I’ve updated the instructions to use Maven 3.9.10, which is the most up-to-date version at the time of writing.

Additionally, I added sudo to the tar and ln commands since those require root permission when extracting to or linking under /usr/local.

This small patch improves the onboarding experience for new developers setting up their environment.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• build/CI
• test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

I manually tested by following the updated instructions to set up Maven 3.9.10 on a fresh environment.

How did you try to break this feature and the system with this change?

Maven 3.x on official Apache Maven distribution site.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 16.60%. Comparing base (ea7919b) to head (465b635).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #11025      +/-   ##
============================================
- Coverage     16.60%   16.60%   -0.01%     
- Complexity    13924    13925       +1     
============================================
  Files          5730     5730              
  Lines        508224   508224              
  Branches      61789    61789              
============================================
- Hits          84388    84387       -1     
  Misses       414401   414401              
- Partials       9435     9436       +1     

Flag	Coverage Δ
uitests	3.93% <ø> (ø)
unittests	17.49% <ø> (-0.01%)	⬇️

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[bernardodemarco]

Only docs update, lgtm