Use Deno.Command for upgrade

cmd/upgrade.ts

@@ -3,28 +3,28 @@ import { version } from "../version.ts";
 export async function upgradeCommand() {
   console.log("Now going to attempt an upgrade...");
 
-  const p = Deno.run({
-    cmd: ["deno", "cache", "--reload", Deno.mainModule],
+  const command = new Deno.Command("deno", {
+    args: ["cache", "--reload", Deno.mainModule],
+    stdout: "inherit",
+    stderr: "inherit",
   });
-  const exitCode = await p.status();
-  if (!exitCode.success) {
+  const commandOutput = await command.output();
+  if (!commandOutput.success) {
     console.error("Something went wrong there...");
     Deno.exit(1);
   }
   console.log(
     "So, that's done. Now let's see if this actually did anything...",
   );
-  const vp = Deno.run({
-    cmd: ["deno", "run", "-A", "--unstable", Deno.mainModule, "version"],
-    stdout: "piped",
+  const vp = new Deno.Command("deno", {
+    args: ["run", "-A", "--unstable", Deno.mainModule, "version"],
   });
-  const versionStatus = await vp.status();
+  const versionStatus = await vp.output();
   if (!versionStatus.success) {
     console.error("Could not run version command, something is wrong.");
     Deno.exit(1);
   }
-  const rawVersion = await vp.output();
-  const newVersion = new TextDecoder().decode(rawVersion).trim();
+  const newVersion = new TextDecoder().decode(versionStatus.stdout).trim();
   if (newVersion === version) {
     console.log(
       `Nope. I hate to tell you this, but it looks like we're still running ${newVersion}. This was a bit of a futile exercise. Let's try again soon some time.`,