Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Installation request for delahaye/dlh_googlemaps >=2.3.2.0,<2.4-dev -> satisfiable by delahaye/dlh_googlemaps[2.3.2].
- delahaye/dlh_googlemaps 2.3.2 requires contao-community-alliance/composer-plugin 3.* -> satisfiable by contao-community-alliance/composer-plugin[3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.1.x-dev, 3.0.x-dev].
- contao-community-alliance/composer-plugin 3.0.0 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.1 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.2 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.3 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.4 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.5 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.6 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.7 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.8 conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.1.x-dev conflicts with contao/core[3.5.30].
- contao-community-alliance/composer-plugin 3.0.x-dev conflicts with contao/core[3.5.30].
- Installation request for contao/core 3.5.30 -> satisfiable by contao/core[3.5.30].