fix: prevent labels ending with - in resource id

Signed-off-by: Ben Meier <ben.meier@humanitec.com>

score-v1b1.json

@@ -144,11 +144,11 @@
           "pattern": "^[A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9]$"
         },
         "id": {
-          "description": "An optional Resource identifier. When two resources share the same type, class, and id, they are considered the same resource when used across related Workloads. The id may be up to 63 characters, including a-z, 0-9, '-' or '.' but may not start or end with '-' or '.'.",
+          "description": "An optional Resource identifier. The id may be up to 63 characters, including one or more labels of a-z, 0-9, '-' not starting or ending with '-' separated by '.'. When two resources share the same type, class, and id, they are considered the same resource when used across related Workloads.",
           "type": "string",
           "minLength": 2,
           "maxLength": 63,
-          "pattern": "^[a-z0-9][a-z0-9-.]{0,61}[a-z0-9]$"
+          "pattern": "^[a-z0-9]+(?:-+[a-z0-9]+)*(?:\\.[a-z0-9]+(?:-+[a-z0-9]+)*)*$"
         },
         "metadata": {
           "description": "The metadata for the Resource.",