fix(get-config): loaded config with require rather than import

since loading json config cannot be accomplished with import without import assertions

for #2543

lib/get-config.js

@@ -1,5 +1,6 @@
-import {dirname} from 'node:path';
+import {dirname, resolve} from 'node:path';
 import {fileURLToPath} from 'node:url';
+import {createRequire} from 'node:module';
 
 import {castArray, isNil, isPlainObject, isString, pickBy} from 'lodash-es';
 import {readPackageUp} from 'read-pkg-up';
@@ -13,6 +14,7 @@ import {parseConfig, validatePlugin} from './plugins/utils.js';
 
 const debug = debugConfig('semantic-release:config');
 const __dirname = dirname(fileURLToPath(import.meta.url));
+const require = createRequire(import.meta.url);
 
 const CONFIG_NAME = 'release';
 
@@ -33,7 +35,7 @@ export default async (context, cliOptions) => {
     options = {
       ...castArray(extendPaths).reduce(async(eventualResult, extendPath) => {
         const result = await eventualResult;
-        const extendsOptions = await import(resolveFrom.silent(__dirname, extendPath) || resolveFrom(cwd, extendPath));
+        const extendsOptions = require(resolveFrom.silent(__dirname, extendPath) || resolveFrom(cwd, extendPath));
 
         // For each plugin defined in a shareable config, save in `pluginsPath` the extendable config path,
         // so those plugin will be loaded relative to the config file