ci: centralize test execution in Makefile

Introduce a 'test' target in the Makefile to standardize how tests are run
locally and in CI. This change updates the GitHub workflow to use 'make test',
ensuring consistency across all development environments and simplifying
CI maintenance.

Author: oligot

.github/workflows/go.yaml

@@ -12,7 +12,7 @@ jobs:
       - uses: cachix/install-nix-action@v30
         with:
           nix_path: nixpkgs=channel:nixos-unstable
-      - run: nix-shell --run "go test -race ./..."
+      - run: nix-shell --run "make test"
   build:
     name: Build
     runs-on: ${{ matrix.os }}

Makefile

@@ -1,3 +1,8 @@
+# Run tests
+test:
+	@go test -race ./... -v
+.PHONY: test
+
 # Lint the source code
 lint:
 	@golangci-lint run