Expand note about defaults.json compatibility

In the future we might convert the file to JSON with comments, or add
this note to a JSON schema.

lib/codeql.test.js

@@ -36,7 +36,7 @@ const sinon = __importStar(require("sinon"));
 const actionsUtil = __importStar(require("./actions-util"));
 const api = __importStar(require("./api-client"));
 const codeql = __importStar(require("./codeql"));
-const defaults = __importStar(require("./defaults.json")); // Referenced from codeql-action-sync-tool!
+const defaults = __importStar(require("./defaults.json"));
 const feature_flags_1 = require("./feature-flags");
 const languages_1 = require("./languages");
 const logging_1 = require("./logging");

lib/feature-flags.js

@@ -24,7 +24,7 @@ const fs = __importStar(require("fs"));
 const path = __importStar(require("path"));
 const semver = __importStar(require("semver"));
 const api_client_1 = require("./api-client");
-const defaults = __importStar(require("./defaults.json")); // Referenced from codeql-action-sync-tool!
+const defaults = __importStar(require("./defaults.json"));
 const util = __importStar(require("./util"));
 const DEFAULT_VERSION_FEATURE_FLAG_PREFIX = "default_codeql_version_";
 const DEFAULT_VERSION_FEATURE_FLAG_SUFFIX = "_enabled";

lib/feature-flags.test.js

@@ -25,7 +25,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const fs = __importStar(require("fs"));
 const path = __importStar(require("path"));
 const ava_1 = __importDefault(require("ava"));
-const defaults = __importStar(require("./defaults.json")); // Referenced from codeql-action-sync-tool!
+const defaults = __importStar(require("./defaults.json"));
 const feature_flags_1 = require("./feature-flags");
 const logging_1 = require("./logging");
 const repository_1 = require("./repository");

lib/setup-codeql.js

@@ -31,7 +31,10 @@ const semver = __importStar(require("semver"));
 const uuid_1 = require("uuid");
 const actions_util_1 = require("./actions-util");
 const api = __importStar(require("./api-client"));
-const defaults = __importStar(require("./defaults.json")); // Referenced from codeql-action-sync-tool!
+// Note: defaults.json is referenced from the CodeQL Action sync tool and the Actions runner image
+// creation scripts. Ensure that any changes to the format of this file are compatible with both of
+// these dependents.
+const defaults = __importStar(require("./defaults.json"));
 const util = __importStar(require("./util"));
 const util_1 = require("./util");
 exports.CODEQL_DEFAULT_ACTION_REPOSITORY = "github/codeql-action";