Update dessalines/lemmy Docker tag to v0.19.7

Author: renovate[bot]

lemmy/Chart.yaml

@@ -4,7 +4,7 @@ description: lemmy
 type: application
 version: 0.1.0
 # renovate: image=dessalines/lemmy
-appVersion: 0.19.6
+appVersion: 0.19.7
 dependencies:
   - name: common
     repository: 'oci://registry-1.docker.io/bitnamicharts'