build: use Go 1.23

In recent commits, Terraform was upgraded to 1.24,
but the work done to enable that has not yet hit
a release branch.

Specifically, in the `go.mod` for current versions
they are specifying `godebug tlskyber=0` which is
not supported in Go 1.24.

Author: jnsgruk

snap/snapcraft.yaml

@@ -44,7 +44,7 @@ parts:
     source: https://github.com/hashicorp/terraform
     source-type: git
     source-tag: "v$SNAPCRAFT_PROJECT_VERSION"
-    build-snaps: [go]
+    build-snaps: [go/1.23/stable]
     build-environment:
       - CGO_ENABLED: "0"
       - GOFLAGS: "-mod=readonly"