Full list of changes:
- chore: fix cppcheck issues with v2.21.0
[Issue #3593 - @airween] - fix: ctl:ruleRemoveTargetByTag not removing XML attribute targets
[Issue #3592 - @fzipi] - Remove deprecated REQBODY_PROCESSOR_ERROR and REQBODY_PROCESSOR_ERROR_MSG
[Issue #3578 - @hnakamur] - Re-apply lost fix 4f33f5b: collection_unpack value_len underflow regression
[Issue #3560 - @g4mm4-VCF]