Update ghcr.io/product-os/self-hosted-runners Docker tag to v6.6.27

Update ghcr.io/product-os/self-hosted-runners from 6.6.26 to 6.6.27

Change-type: patch

Author: balena-renovate[bot]

docker-compose.yml

@@ -48,7 +48,7 @@ services:
 
   runner-container-1:
     <<: *runner-container
-    image: ghcr.io/product-os/self-hosted-runners:6.6.26-jammy
+    image: ghcr.io/product-os/self-hosted-runners:6.6.27-jammy
 
   runner-jammy-1:
     <<: *runner-vm