Code drop

- XPLANBOX-3506 - Add lower cases to parameters (d4ee90571)
- XPLANBOX-3438 - upgrade to PostgreSQL 15 (746e1799c)
- XPLANBOX-3393 - updated assertions (49ebda025)
- XPLANBOX-3506 - case insensitiv SERVICE param in XPlanGateway (43f8b3437)
- XPLANBOX-3393 - added route /xplan-ows/getAttachment, use XPlanGateway in html.gfi (2e231380c)
- XPLANBOX-3393 - replaced XPlanWMS/XPlanValidatorWMS Urls with XPlanGatewayUrls in map preview of XPlanValidatorWeb and XPlanManagerWeb (d89f4cf4a)
- XPLANBOX-3354 - execute xplan-gateway-soapui with mvn and docker, enhanced jenkinsfile (f64803c26)
- XPLANBOX-3354 - added new soapui project xplan-gateway-soapui-project.xml (194d72a20)
- XPLANBOX-3393 - enhanced gateway: /xplan-ows/syn-archive/planwerk -> [xplan-services]/xplan-wms/services/planwerkwmsarchive (eed4d70fb)
- XPLANBOX-3393 - create links with xplan-gateway syntax (2e874cd90)
- XPLANBOX-3393 - added xplan-validator-wms to xplan-gateway (de15e0b44)

Co-authored-by: Dirk Stenger <stenger@lat-lon.de>
Co-authored-by: Lyn Elisa Goltz <goltz@lat-lon.de>

Dropped from commit: 91cf95439eb67a8fd943fe8ca5e943d8b9ddcc3e