fix: update go icon color to match brand (#586)

* chore(go): Update Go icon color to match brand

The color for Go-related icons has been updated from #519ABA to #00ADD8
to match the official Go brand color. This affects both file extension
and filename icons for Go files including go, go.mod, go.sum, and
go.work files.

* make

Author: epilande

lua/nvim-web-devicons/default/icons_by_file_extension.lua

@@ -156,7 +156,7 @@ return {
   ["glb"]            = { icon = "", color = "#FFB13B", cterm_color = "214", name = "BinaryGLTF"                 },
   ["gleam"]          = { icon = "", color = "#FFAFF3", cterm_color = "219", name = "Gleam"                      },
   ["gnumakefile"]    = { icon = "", color = "#6D8086", cterm_color = "66",  name = "Makefile"                   },
-  ["go"]             = { icon = "", color = "#519ABA", cterm_color = "74",  name = "Go"                         },
+  ["go"]             = { icon = "", color = "#00ADD8", cterm_color = "38",  name = "Go"                         },
   ["godot"]          = { icon = "", color = "#6D8086", cterm_color = "66",  name = "GodotProject"               },
   ["gpr"]            = { icon = "", color = "#6D8086", cterm_color = "66",  name = "GPRBuildProject"            },
   ["gql"]            = { icon = "", color = "#E535AB", cterm_color = "199", name = "GraphQL"                    },

lua/nvim-web-devicons/default/icons_by_filename.lua

@@ -97,9 +97,9 @@ return {
   ["fp-info-cache"]              = { icon = "", color = "#FFFFFF", cterm_color = "231", name = "KiCadCache"              },
   ["fp-lib-table"]               = { icon = "", color = "#FFFFFF", cterm_color = "231", name = "KiCadFootprintTable"     },
   ["gnumakefile"]                = { icon = "", color = "#6D8086", cterm_color = "66",  name = "Makefile"                },
-  ["go.mod"]                     = { icon = "", color = "#519ABA", cterm_color = "74",  name = "GoMod"                   },
-  ["go.sum"]                     = { icon = "", color = "#519ABA", cterm_color = "74",  name = "GoSum"                   },
-  ["go.work"]                    = { icon = "", color = "#519ABA", cterm_color = "74",  name = "GoWork"                  },
+  ["go.mod"]                     = { icon = "", color = "#00ADD8", cterm_color = "38",  name = "GoMod"                   },
+  ["go.sum"]                     = { icon = "", color = "#00ADD8", cterm_color = "38",  name = "GoSum"                   },
+  ["go.work"]                    = { icon = "", color = "#00ADD8", cterm_color = "38",  name = "GoWork"                  },
   ["gradle-wrapper.properties"]  = { icon = "", color = "#005F87", cterm_color = "24",  name = "GradleWrapperProperties" },
   ["gradle.properties"]          = { icon = "", color = "#005F87", cterm_color = "24",  name = "GradleProperties"        },
   ["gradlew"]                    = { icon = "", color = "#005F87", cterm_color = "24",  name = "GradleWrapperScript"     },