fix(seautils): catch the error that is raised if dig is not installed on the system

seautils/seautils.py

@@ -8,6 +8,7 @@
 import asyncio
 import inspect
 import operator
+from asyncio.subprocess import Process
 from functools import partial, partialmethod
 from typing import Any
 
@@ -97,8 +98,13 @@ class SeaUtils(commands.Cog):
             command_opts.extend(['-p', port])
         command_opts.extend(['+yaml'])
 
-        process = await asyncio.create_subprocess_exec(*command_opts, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE)
+        try:
+            process: Process = await asyncio.create_subprocess_exec(*command_opts, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE)
             stdout, stderr = await process.communicate()
+        except (FileNotFoundError):
+            await ctx.maybe_send_embed(content="The `dig` command is not installed on this system.")
+            return
+
         if stderr:
             await ctx.maybe_send_embed(content= "An error was encountered!\n" + cf.box(text=stderr.decode()))
         else: