chore: bump minimum Java version from 11 to 17

[javier-aliaga]

Description

• Bump minimum Java compatibility from 11 to 17 across all modules
• Update maven.compiler.source, target, and release in root pom.xml and dapr-spring/pom.xml
• Update all 19 example READMEs to reference JDK 17 download links

Changes

Build configuration

• pom.xml — compiler source/target/release 11 → 17
• dapr-spring/pom.xml — compiler source/target/release 11 → 17

Documentation

• 19 example README.md files — JDK prerequisite updated from 11 to 17 (Microsoft, Oracle, OpenJDK links)

Test plan

• Verify mvn compile succeeds with JDK 17+
• Verify mvn test passes
• Confirm no remaining references to JDK 11 in pom.xml or README files

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #1694

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.91%. Comparing base (aa296fa) to head (430ee60).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1721      +/-   ##
============================================
+ Coverage     72.90%   72.91%   +0.01%     
+ Complexity     2257     2256       -1     
============================================
  Files           242      242              
  Lines          7415     7415              
  Branches        738      738              
============================================
+ Hits           5406     5407       +1     
+ Misses         1648     1646       -2     
- Partials        361      362       +1     

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