fix(docker): fix Docker warnings

etherpad.yml

@@ -1,5 +1,3 @@
-version: '3.5'
-
 services:
     # Etherpad: real-time collaborative document editing
     etherpad:

grafana.yml

@@ -1,5 +1,3 @@
-version: '3.5'
-
 services:
   # Grafana: used for visualization of metrics and log data through customizable dashboards.
   grafana:

jibri.yml

@@ -1,5 +1,3 @@
-version: '3.5'
-
 services:
     jibri:
         image: jitsi/jibri:${JITSI_IMAGE_VERSION:-unstable}

jigasi.yml

@@ -1,5 +1,3 @@
-version: '3.5'
-
 services:
     # SIP gateway (audio)
     jigasi:

log-analyser.yml

@@ -1,5 +1,3 @@
-version: '3.5'
-
 services:
   # Log Analyser: used for setting up a log analysis system for visualization, log collection and log processing.
 

transcriber.yml

@@ -1,5 +1,3 @@
-version: '3.5'
-
 services:
     transcriber:
         image: jitsi/jigasi:${JITSI_IMAGE_VERSION:-unstable}

whiteboard.yml

@@ -1,5 +1,3 @@
-version: '3.5'
-
 services:
     whiteboard:
         image: jitsi/excalidraw-backend:21