fix: dev: [compose-core] invalid caching key in function ``get_service_relation``

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

bin/compose-core

@@ -2069,7 +2069,7 @@ export -f get_service_relations
 
 
 get_service_relation() {
-    local service="$1" relation="$2" cache_file="$state_tmpdir/$FUNCNAME.cache.$1" \
+    local service="$1" relation="$2" cache_file="$state_tmpdir/$FUNCNAME.cache.$1.$2" \
           rn ts rc td
     if [ -e "$cache_file" ]; then
         #debug "$FUNCNAME: SESSION cache hit $1"