Makefile: Removes unnecessary pins of go deps

[tomponline]

No description provided.

[simondeziel]

Dunno how it worked for you cause here make update-gomod now fails:

$ make update-gomod 
go get -t -v -d -u ./...
go: upgraded go 1.20 => 1.21
go: added toolchain go1.21.6
go mod tidy --go=1.20
go: github.com/mdlayher/socket@v0.5.0 requires go@1.21, but 1.20 is requested
make: *** [Makefile:95: update-gomod] Error 1

[tomponline]

ok ill revert

[tomponline]

weird it builds ok though

[tomponline]

im not so sure about reverting, ive tried this with go version 1.19 and 1.20 respectively locally and done a full update and build and its fine. I've confirmed the issue occurs if you try make update-gomod with go >= 1.21

[tomponline]

I'll revert the stable-5.0 one and leave this one as is as we'll be switching up to go 1.22 soon anyway