Fix: Failing Big Bang 2.0 Deployments (#1648)

## Description

It appears that there is a mistake in the error handling of the
semver.NewVersion function. It should be checking for no error instead
of error. Found with @ragingpastry

## Related Issue

Fixes #
<!-- or -->
Relates to #

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Other (security config, docs update, etc)

## Checklist before merging

- [x] Test, docs, adr added or updated as needed
- [x] [Contributor Guide
Steps](https://github.com/defenseunicorns/zarf/blob/main/CONTRIBUTING.md#developer-workflow)
followed

Co-authored-by: william.walker.102 <[email protected]>

src/extensions/bigbang/manifests.go

@@ -67,7 +67,7 @@ func manifestZarfCredentials(version string) corev1.Secret {
  values := bbV1ZarfCredentialsValues
 
  semverVersion, err := semver.NewVersion(version)
- if err != nil && semverVersion.Major() == 2 {
+ if err == nil && semverVersion.Major() == 2 {
  values = bbV2ZarfCredentialsValues
  }