Update spacebones_light.toml (helix-editor#7125)

Better contrast between type variable and its members

Author: rsj-ioki

runtime/themes/spacebones_light.toml

@@ -14,6 +14,7 @@
 "variable" = "#715ab1"
 "variable.builtin" = "#715ab1"
 "variable.parameter" = "#7590db"
+"variable.other.member" = "#002db3"
 "type" = "#6c3163"
 "type.builtin" = "#6c3163"
 "constructor" = { fg = "#4e3163", modifiers = ["bold"] }