update ytdlp on container start; cleanup gitea workflow

update-ytdlp.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+echo "updating yt-dlp"
+echo "killing youdis"
+pkill -f youdis.py || true
+python3 -m pip install --no-cache-dir --upgrade --pre "yt-dlp[default]"
+VERSION=$(python3 -m pip show yt-dlp 2>/dev/null | awk '/Version:/ {print $2}')
+
+echo "updated yt-dlp to $VERSION"
+echo "restarting youdis"
+python3 /app/youdis.py &