chore(template): bump Alpine runtime to 3.24.1

Update the template action base image to Alpine 3.24.1 and refresh the template local image structure test to assert the new Alpine VERSION_ID.

Author: ChristophShyper

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.23.4
+FROM alpine:3.24.1
 
 # Copy all needed files
 COPY entrypoint.sh /

tests/docker/local-image.yml

@@ -4,7 +4,7 @@ commandTests:
   - name: OS version check
     command: cat
     args: [/etc/os-release]
-    expectedOutput: [VERSION_ID=3\.23]
+    expectedOutput: [VERSION_ID=3\.24\.1]
 
   - name: Required tools installed
     command: bash