Bump alpine from 3.20.3 to 3.20.5 in /src/test/resources/org/jvnet/hudson/plugins/platformlabeler/alpine/3.20.3

Bump alpine from 3.20.3 to 3.20.5 in /src/test/resources/org/jvnet/hudson/plugins/platformlabeler/alpine/3.20.3 #1308