Added PHP 8.4 support

[shailesh-google]

Fix: #469

1. setAccessible(true) Method is deprecated Refer Here:- https://www.php.net/manual/en/reflectionproperty.setaccessible.php

2. Added AMP Library Due to Error with lowest version test in composer analyze command.

3. Psalm Error levels: https://psalm.dev/docs/running_psalm/error_levels/

[codecov]

Codecov Report

❌ Patch coverage is 88.50575% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.63%. Comparing base (8022eba) to head (2a24d6b).

Files with missing lines	Patch %	Lines
...c/Api/ApigeeX/Controller/PaginationHelperTrait.php	50.00%	8 Missing ⚠️
src/Api/ApigeeX/Controller/RatePlanController.php	0.00%	1 Missing ⚠️
...Api/Monetization/Controller/RatePlanController.php	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                3.x     #478      +/-   ##
============================================
- Coverage     86.64%   86.63%   -0.01%     
- Complexity     1773     1798      +25     
============================================
  Files           349      349              
  Lines          4664     4661       -3     
============================================
- Hits           4041     4038       -3     
  Misses          623      623              

Flag	Coverage Δ
unittests	86.63% <88.50%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
.../ApigeeX/Controller/AcceptedRatePlanController.php	86.48% <100.00%> (ø)
...rc/Api/ApigeeX/Controller/ApiProductController.php	80.00% <100.00%> (ø)
...pi/ApigeeX/Controller/PrepaidBalanceController.php	100.00% <ø> (ø)
...geeX/Denormalizer/AcceptedRatePlanDenormalizer.php	85.71% <100.00%> (ø)
...pi/ApigeeX/Denormalizer/ApiProductDenormalizer.php	100.00% <100.00%> (ø)
src/Api/ApigeeX/Denormalizer/AppDenormalizer.php	73.33% <100.00%> (ø)
...i/ApigeeX/Denormalizer/BillingTypeDenormalizer.php	85.71% <100.00%> (ø)
...pigeeX/Denormalizer/PrepaidBalanceDenormalizer.php	85.71% <100.00%> (ø)
.../Api/ApigeeX/Denormalizer/RatePlanDenormalizer.php	90.00% <100.00%> (ø)
...igeeX/Denormalizer/RatePlanDenormalizerFactory.php	100.00% <ø> (ø)
... and 34 more

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[shishir-intelli]

LGTM