Use java25 as build image and really switch to main branch.

.drone.yml

@@ -3,26 +3,26 @@ type: docker
 name: default
 steps:
   - name: build
-    image: maven:3.9-eclipse-temurin-21
+    image: maven:3.9-eclipse-temurin-25
     commands:
       - mvn clean install -DskipTests=true -Dmaven.javadoc.skip=true -B -V
     when:
       ref:
         include:
-          - refs/head/master
+          - refs/head/main
           - refs/head/feature/**
           - refs/tags/**
   - name: test
-    image: maven:3.9-eclipse-temurin-21
+    image: maven:3.9-eclipse-temurin-25
     commands:
       - mvn test -B
     when:
       branch:
         include:
-          - master
+          - main
           - feature/*
   - name: deploy
-    image: maven:3.9-eclipse-temurin-21
+    image: maven:3.9-eclipse-temurin-25
     environment:
       REPO_TOKEN:
         from_secret: repo-token
@@ -32,7 +32,7 @@ steps:
       - mvn -s maven-settings.xml deploy -DskipTests=true
     when:
       branch:
-        - master
+        - main
       event:
         exclude:
           - pull_request