chore(ci): ignore Docker Compose Go module updates (#5544)

Adds Dependabot ignore rules for
`github.com/compose-spec/compose-go/v2`, `github.com/docker/cli`, and
`github.com/docker/docker` in the Go modules update block.

These libraries need to be upgraded together with the broader Docker
Compose dependency set; standalone bumps currently fail because the
Compose parser types are no longer compatible with the pinned Docker
Compose version.

Author: jgoux

.github/dependabot.yml

@@ -31,6 +31,10 @@ updates:
           - patch
         exclude-patterns:
           - github.com/compose-spec/compose-go/v2
+    ignore:
+      - dependency-name: "github.com/compose-spec/compose-go/v2"
+      - dependency-name: "github.com/docker/cli"
+      - dependency-name: "github.com/docker/docker"
     cooldown:
       default-days: 7
   - package-ecosystem: "npm"