chore: reformat with gofumpt (#109)

* Reformat with gofumpt

* Suppress issue about laxer perms than 0600

---------

Co-authored-by: Joel Kamp <joel.kamp@docker.com>

pkg/policy/policy_test.go

@@ -22,7 +22,7 @@ func loadAttestation(t *testing.T, path string) *attestation.Envelope {
 		t.Fatal(err)
 	}
 
-	var env = new(attestation.Envelope)
+	env := new(attestation.Envelope)
 	err = json.Unmarshal(ex, env)
 	if err != nil {
 		t.Fatal(err)
@@ -103,7 +103,6 @@ func TestRegoEvaluator_Evaluate(t *testing.T) {
 			}
 		})
 	}
-
 }
 
 func TestLoadingMappings(t *testing.T) {

pkg/policy/rego.go

@@ -140,6 +140,7 @@ var verifyDecl = &ast.Builtin{
 	Decl:             types.NewFunction(types.Args(dynamicObj, dynamicObj), dynamicObj),
 	Nondeterministic: true,
 }
+
 var attestDecl = &ast.Builtin{
 	Name:             "attest.fetch",
 	Decl:             types.NewFunction(types.Args(types.S), dynamicObj),