chore: dependabot prefix chore, not eco-system

Author: jkowalleck

.github/dependabot.yml

@@ -13,7 +13,7 @@ updates:
     labels: [ 'dependencies' ]
     commit-message:
       ## prefix maximum string length of 15
-      prefix: 'poetry'
+      prefix: 'chore'
       include: 'scope'
     open-pull-requests-limit: 999
   - package-ecosystem: 'github-actions'
@@ -24,6 +24,6 @@ updates:
     labels: [ 'dependencies' ]
     commit-message:
       ## prefix maximum string length of 15
-      prefix: 'gh-actions'
+      prefix: 'chore'
       include: 'scope'
-    open-pull-requests-limit: 999
+    open-pull-requests-limit: 999