feat!: MAJOR release. Update go to 1.25, and add migration path (#520)

BREAKING CHANGE: This bumps Go and external packages to later versions.

lua/gitlab/version.lua

@@ -0,0 +1,24 @@
+local M = {}
+
+M.is_go_valid = function()
+  local go_version = io.popen("go version"):read("*a")
+  if go_version then
+    local major, minor, _ = go_version:match("(%d+)%.(%d+)%.?(%d*)")
+    if major and tonumber(major) >= 1 and tonumber(minor) >= 25 then
+      return true
+    else
+      return false
+    end
+  else
+    return false
+  end
+end
+
+M.check_go_version = function()
+  local has_version = M.is_go_valid()
+  if not has_version then
+    return "Go is not installed, or version is older than 1.25.1. Please reinstall up-to-date Go version: https://go.dev/dl/"
+  end
+end
+
+return M