Verison error

[linliyuan]

Describe the bug
Use swag --version show v1.8.1 when I'm install v1.8.2
I cannot use the swag tool version over v1.8.2 because it will report an error "failed to evaluate const" #1622. Meanwhile, we will make corresponding version judgments based on the version for the version control of this tool to ensure the tool version used by the team is consistent. However, currently, the version output of downloading v1.8.2 will be v1.8.1.

To Reproduce
Steps to reproduce the behavior:

1. swag --version

Expected behavior
swag --version show v1.8.2

Screenshots

Your swag version
e.g. v1.8.2

Your go version
e.g. 1.16.7