update icingaweb2-grafana version and grafana repo

icingaweb2-grafana/vars/main.yml

@@ -2,7 +2,7 @@ grafana_icingaweb2_modules_dir: /usr/share/icingaweb2/modules
 grafana_icingaweb2_modules_dir_openbsd: /var/www/icinga-web2/modules/
 grafana_icingaweb2_module:
   repo: https://github.com/Mikesch-mp/icingaweb2-module-grafana
-  version: v1.3.6
+  version: v1.4.2
   name: grafana
 
 grafana_packages:
@@ -28,7 +28,7 @@ grafana_repos:
   - name: influxdb-repo
     key:
       url: https://repos.influxdata.com/influxdb.key
-    repo: "deb https://repos.influxdata.com/ubuntu bionic stable"
+    repo: "deb https://repos.influxdata.com/ubuntu focal stable"
     state: present
 
 grafana_systemd_services: