migrate_plus 8.x-4.0-beta2

$ git log --oneline 8.x-4.0-beta1..8.x-4.x
3c2c48e Issue #2830512: String Replace Process plugin by davidparedes21, Adita, Charlotte17, quiron, edysmp, generalredneck, rodrigoaguilera: String Replace Process plugin
2524436 Issue #2921708: Allow creation of custom headers without auth by edysmp, drclaw, CrashTest_, heddn: Allow creation of custom headers without auth
65848b6 Issue #2925402: Remove deprecated (8.3.x) migration process plugin in favour of migration_lookup by GeduR, heddn: Remove deprecated (8.3.x) migration process plugin in favour of migration_lookup
3056a6b Issue #2923891: Transliterate file names by JorgeLM, hl17, heddn, edysmp: Transliterate file names
88df038 Issue #2823380: SoapClient not found by LOBsTerr, heddn: SoapClient not found
63133b8 Issue #2905146: Add phpcs checks by heddn: Add phpcs checks
59839b0 Issue #2823380: SoapClient not found by LOBsTerr, heddn: SoapClient not found
6eaa3eb Issue #2899065: Migrate Example Setup needs path and menu_ui add to dependencies by bhawanac, ultimike: Migrate Example Setup needs path and menu_ui add to dependencies
593b842 Issue #2900474: JSON is not converted to associative array for non-utf8 data by derhasi, ultimike: JSON is not converted to associative array for non-utf8 data
f1f6525 Issue #2892143: migrate_example : BeerTerm plugin has the wrong description for the fields by LOBsTerr, ultimike: migrate_example : BeerTerm plugin has the wrong description for the fields