Add gosec to SAST analysis

[WaqarAhmedVC]

Description

Add gosec to perform Static Application Security Testing (SAST) Analysis.

Fixes # (issue)

• Non existent SAST tool in the build pipeline

Type of change

Please delete options that are not relevant.

• [x] New feature - Adding SAST tool in workflow (non-breaking change which adds functionality)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [x] Adding a new tool in the workflow file. Tested to perform the required security checks without breaking

Test Configuration:

• NA

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] New and existing E2E tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] I have not added any vulnerable dependencies to my code

[github-advanced-security[bot]]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 55.55556% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 61.88%. Comparing base (b9047c0) to head (36e44b6).

Files	Patch %	Lines
cache/rnd_cache.go	50.00%	1 Missing :warning:
cmd/thor/utils.go	0.00%	1 Missing :warning:
comm/peer.go	0.00%	1 Missing :warning:
p2psrv/rpc/rpc.go	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #755 +/- ## ======================================= Coverage 61.88% 61.88% ======================================= Files 202 202 Lines 18696 18696 ======================================= Hits 11570 11570 Misses 6015 6015 Partials 1111 1111 ```

:umbrella: View full report in Codecov by Sentry.
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[darrenvechain]

@WaqarAhmedVC we can add gosec to the linters in our lint config:

https://github.com/vechain/thor/blob/master/.golangci.yml#L13

[WaqarAhmedVC]

@darrenvechain Thanks for pointing out. I was searching for this info but couldn't find it.