ci: send the mapping file after a release.

.drone.yml

@@ -137,6 +137,27 @@ steps:
         from_secret: giteaAPI
       base_url: https://gitea.amine-louveau.fr
       files: signed.apk
+
+  - name: notify
+    image: drillster/drone-email
+    failure: ignore
+    settings:
+      host:
+        from_secret: smtpHOST
+      port:
+        from_secret: smtpPORT
+      username:
+        from_secret: smtpUSERNAME
+      password:
+        from_secret: smtpPASSWORD
+      from:
+        from_secret: smtpFROM
+      subject: Mapping file
+      recipients:
+        from_secret: smtpTO
+      recipients_only: true
+      skip_verify: true
+      attachment: androidApp/build/outputs/mapping/githubConfigRelease/mapping.txt
 trigger:
   event:
     - tag