Update symfony/yaml requirement from ^4.0|^5.0|^6.0|^7.0 to ^4.0|^5.0|^6.0|^7.0|^8.0

Update symfony/yaml requirement from ^4.0|^5.0|^6.0|^7.0 to ^4.0|^5.0|^6.0|^7.0|^8.0 #1513