Manage deprecation notices in php 8.3

[ronanguilloux]

186x: trim(): Passing null to parameter #1 ($string) of type string is deprecated
178x in ZipCodeTest::testEmptyValuesByCountry from IsoCodes\Tests
5x in ZipCodeTest::testEmptyValues from IsoCodes\Tests
1x in CreditCardTest::testEmptyValues from IsoCodes\Tests
1x in PhoneNumberTest::testEmptyValues from IsoCodes\Tests
1x in SsnTest::testEmptyValues from IsoCodes\Tests

11x: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated
1x in Ean13Test::testEmptyValues from IsoCodes\Tests
1x in GlnTest::testEmptyValues from IsoCodes\Tests
1x in GsrnTest::testEmptyValues from IsoCodes\Tests
1x in Gtin12Test::testEmptyValues from IsoCodes\Tests
1x in Gtin14Test::testEmptyValues from IsoCodes\Tests
1x in Gtin8Test::testEmptyValues from IsoCodes\Tests
1x in ImeiTest::testEmptyValues from IsoCodes\Tests
1x in IsbnTest::testEmptyValues from IsoCodes\Tests
1x in IsmnTest::testEmptyValues from IsoCodes\Tests
1x in SsccTest::testEmptyValues from IsoCodes\Tests
1x in UdiTest::testEmptyValues from IsoCodes\Tests

9x: strlen(): Passing null to parameter #1 ($string) of type string is deprecated
2x in OrganismeType12NormeB2Test::testInvalidValues from IsoCodes\Tests
1x in CifTest::testEmptyValues from IsoCodes\Tests
1x in CusipTest::testEmptyValues from IsoCodes\Tests
1x in GdtiTest::testEmptyValues from IsoCodes\Tests
1x in GraiTest::testEmptyValues from IsoCodes\Tests
1x in NifTest::testEmptyValues from IsoCodes\Tests
1x in SedolTest::testEmptyValues from IsoCodes\Tests
1x in StructuredCommunicationTest::testEmptyValues from IsoCodes\Tests

5x: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated
1x in InseeTest::testEmptyValues from IsoCodes\Tests
1x in IswcTest::testEmptyValues from IsoCodes\Tests
1x in MacTest::testEmptyValues from IsoCodes\Tests
1x in SwiftBicTest::testEmptyValues from IsoCodes\Tests
1x in UkninTest::testEmptyValues from IsoCodes\Tests

3x: strtoupper(): Passing null to parameter #1 ($string) of type string is deprecated
2x in PhoneNumberTest::testInvalidValues from IsoCodes\Tests
1x in IsinTest::testEmptyValues from IsoCodes\Tests

2x: mb_strlen(): Passing null to parameter #1 ($string) of type string is deprecated
1x in BbanTest::testEmptyValues from IsoCodes\Tests
1x in IbanTest::testEmptyValues from IsoCodes\Tests

1x: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated
1x in AbnTest::testEmptyValues from IsoCodes\Tests

1x: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
1x in VinNATest::testEmptyValues from IsoCodes\Tests