Decode plus sign correctly in resource attributes

[arnav-dasgupta]

#8030

Changes made :

• Replace the URLDecoder.decode method with a custom decoder
• Unit test

[linux-foundation-easycla]

• ❌ - login: @galahad098 / name: Arnav Dasgupta. The commit (bec5b30) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[codecov]

Codecov Report

❌ Patch coverage is 81.81818% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.22%. Comparing base (6893380) to head (bec5b30).

Files with missing lines	Patch %	Lines
...metry/sdk/autoconfigure/ResourceConfiguration.java	81.81%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8058      +/-   ##
============================================
- Coverage     90.23%   90.22%   -0.01%     
- Complexity     7602     7606       +4     
============================================
  Files           838      838              
  Lines         22806    22821      +15     
  Branches       2274     2277       +3     
============================================
+ Hits          20578    20591      +13     
  Misses         1518     1518              
- Partials        710      712       +2     

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