goreleaser: Fix ldflags after project structure

[stefanb]

👋 Hey, in 8e72672 the project was restructured, but the goreleaser config was not adjusted properly.

The recent https://github.com/OpenIoTHub/gateway-go/releases/tag/v0.3.5 binaries are missing the version information:

~/Downloads/gateway-go_0.3.5_darwin_arm64|⇒  ./gateway-go --version
gateway-go version
commit:
built at:
built by:

It was noticed in

• gateway-go 0.3.5 Homebrew/homebrew-core#209360

where we're testing also the version output.

[IoTServ]

ok,I will fix that

[stefanb]

Rebased.

[stefanb]

Fixed in release https://github.com/OpenIoTHub/gateway-go/releases/tag/v0.3.15 :

~/Downloads/gateway-go_0.3.15_darwin_arm64|⇒  ./gateway-go --version
gateway-go version 0.3.15
commit: 54401c6e61974e58bc014995fcc2156e370a3cbc
built at: 2025-03-01T17:38:26Z
built by: goreleaser