Dependabot: set target branch to development

Configure Dependabot to open updates against the development branch. Added target-branch: "development" for pip (/src), npm (/src/static/app), github-actions (/.github), docker (/docker) and docker-compose (/docker). Also added a new npm updates entry for /src/static/client. Update schedules remain weekly.

.github/dependabot.yml

@@ -7,25 +7,36 @@ version: 2
 updates:
   - package-ecosystem: "pip"
     directory: "/src"
+    target-branch: "development"
     schedule:
       interval: "weekly"
 
   - package-ecosystem: "npm"
     directory: "/src/static/app"
+    target-branch: "development"
+    schedule:
+      interval: "weekly"
+      
+  - package-ecosystem: "npm"
+    directory: "/src/static/client"
+    target-branch: "development"
     schedule:
       interval: "weekly"
       
   - package-ecosystem: "github-actions"
     directory: "/.github"
+    target-branch: "development"
     schedule:
       interval: "weekly"
 
   - package-ecosystem: "docker"
     directory: "/docker"
+    target-branch: "development"
     schedule:
       interval: "weekly"
 
   - package-ecosystem: "docker-compose"
     directory: "/docker"
+    target-branch: "development"
     schedule:
       interval: "weekly"