CLI 1st command after upgrading takes excessively longer than subsequent commands

### Before opening, please confirm:

- [X] I have installed the latest version of the Amplify CLI (see above), and confirmed that the issue still persists.
- [X] I have [searched for duplicate or closed issues](https://github.com/aws-amplify/amplify-cli/issues?q=is%3Aissue+).
- [X] I have read the guide for [submitting bug reports](https://github.com/aws-amplify/amplify-cli/blob/master/CONTRIBUTING.md#bug-reports).
- [X] I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.
- [X] I have removed any sensitive information from my code snippets and submission.

### How did you install the Amplify CLI?

amplify upgrade command

### If applicable, what version of Node.js are you using?

14.18.1

### Amplify CLI Version

8.0.2

### What operating system are you using?

Windows

### Did you make any manual changes to the cloud resources managed by Amplify? Please describe the changes made.

None

### Amplify Categories

Not applicable

### Amplify Commands

Not applicable

### Describe the bug

Was on Amplify 8.0.1

1) amplify upgrade
message: "Successfully upgraded to Amplify CLI version 8.0.2!"

2) measure-command { amplify version | out-host }
Screen had no update for 27 seconds, then displayed 8.0.2 and output of measure-command:
8.0.2

Days : 0
Hours : 0
Minutes : 0
Seconds : 27
Milliseconds : 223
Ticks : 272231809
TotalDays : 0.000315083112268519
TotalHours : 0.00756199469444444
TotalMinutes : 0.453719681666667
TotalSeconds : 27.2231809
TotalMilliseconds : 27223.1809

3) rerun same command (completes in 2.75 seconds)
PS C:\Users\erstraub\dev\teamperformance> measure-command { amplify version | out-host}
8.0.2

Days : 0
Hours : 0
Minutes : 0
Seconds : 2
Milliseconds : 749
Ticks : 27491750
TotalDays : 3.18191550925926E-05
TotalHours : 0.000763659722222222
TotalMinutes : 0.0458195833333333
TotalSeconds : 2.749175
TotalMilliseconds : 2749.175

More Information:
This is a result of CLI running a plugin scan the first time it is invoked after an upgrade.

### Expected behavior

Amplify version time should be consistent

### Reproduction steps

1. amplify upgrade
2. amplify version
3. amplify version

2 takes a long time
3 takes 2.75 seconds on my machine

### GraphQL schema(s)

```graphql
# Put schemas below this line

```

### Log output

```
# Put your logs below this line

```

### Additional information

Amplify should either remove the need for plug-in scan or should perform the plug-in scan as part of the upgrade so that upon completion of the upgrade, commands have consistent timing run to run.