deps: Update to github.com/pelletier/go-toml/v2 v2.0.1

[anthonyfok]

For some reasons, dependabot did not pick up on this, probably because of the following test errors:

--- FAIL: TestEmptyTarget (0.00s)
    deployConfig_test.go:184: 
        error:
          got nil value but want non-nil
        got:
          nil
        stack:
          /mnt/easystore/git/hugo/deploy/deployConfig_test.go:184
            c.Assert(err, qt.Not(qt.IsNil))
        
--- FAIL: TestEmptyMatcher (0.00s)
    deployConfig_test.go:198: 
        error:
          got nil value but want non-nil
        got:
          nil
        stack:
          /mnt/easystore/git/hugo/deploy/deployConfig_test.go:198
            c.Assert(err, qt.Not(qt.IsNil))

due to

• Fuzzing setup and fixes pelletier/go-toml#755 (v2.0.0-beta.8 and newer)

I ended up modifying deploy/deployConfig.go (with help from https://stackoverflow.com/questions/28447297/how-to-check-for-an-empty-struct) to get the "empty deployment target/matcher" tests work with github.com/pelletier/go-toml/v2 v2.0.1

My knowledge of Go is still rather limited, so I hope I am doing it correctly. Thanks in advance for your code reviews!

[github-actions]

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