Port away from deprecated health API

For some unnecessary reason this API got renamed for neovim 0.11.

See #15

Author: vimpostor

lua/lumen/health.lua

@@ -1,25 +1,25 @@
 local M = {}
 
 M.check = function()
-	vim.health.report_start("lumen report")
+	vim.health.start("lumen report")
 	local info = vim.fn['lumen#debug#info']()
 
 	if info.platform:len() then
-		vim.health.report_ok(string.format("Platform %s is supported", info.platform))
+		vim.health.ok(string.format("Platform %s is supported", info.platform))
 	else
-		vim.health.report_error("Platform is not supported")
+		vim.health.error("Platform is not supported")
 	end
 
 	if vim.regex('^run'):match_str(info.job_state) == nil then
-		vim.health.report_error(string.format("Background job is not running: %s", info.job_state))
+		vim.health.error(string.format("Background job is not running: %s", info.job_state))
 	else
-		vim.health.report_ok("Background job is running")
+		vim.health.ok("Background job is running")
 	end
 
 	if next(info.job_errors) == nil then
-		vim.health.report_ok("No job errors reported")
+		vim.health.ok("No job errors reported")
 	else
-		vim.health.report_warn("Job reported errors", info.job_errors)
+		vim.health.warn("Job reported errors", info.job_errors)
 	end
 end