fix: install iproute2 for ip command in webhook trigger

The webhook trigger was failing with:
  /var/run/act/workflow/0: line 6: ip: command not found

The issue:
- node:20-bookworm container doesn't include iproute2 package
- The 'ip route' command requires iproute2 to be installed

Solution:
- Install iproute2 package along with jq
- Add fallback to common Docker gateway IP (172.17.0.1)
- This ensures webhook can reach host even if ip command fails

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.gitea/workflows/main.yml

@@ -390,11 +390,17 @@ jobs:
     steps:
       - name: Trigger webhook
         run: |
-          # Install jq for JSON construction
-          apt-get update -qq && apt-get install -y -qq jq > /dev/null 2>&1
+          # Install required packages
+          apt-get update -qq && apt-get install -y -qq jq iproute2 > /dev/null 2>&1
 
           # Get Docker host IP (gateway of the container network)
           HOST_IP=$(ip route | grep default | awk '{print $3}')
+
+          # Fallback to common Docker gateway IPs if not found
+          if [ -z "$HOST_IP" ]; then
+            HOST_IP="172.17.0.1"
+          fi
+
           echo "Using host IP: $HOST_IP"
 
           # Construct JSON payload with jq to properly escape multiline commit messages