Bump the default DiKTat version

Use the latest major release - 1.0.1. The previous default version 0.4.0
started causing build failures because of the copyright rule. DiKTat
tests started failing after the new year. It is not entirely clear
why the tests started failing, but the error behaviour changes when
adding a dummy copyright header to Kotlin source files. Example header:

```
/*
    Copyright (c) My Company, Ltd. 2000-2022. All rights reserved.
*/
```

Release notes for DiKTat 1.0.1 mention a PR that fixes the copyrights rule:
https://github.com/analysis-dev/diktat/releases/tag/v1.0.1

lib/src/main/java/com/diffplug/spotless/kotlin/DiktatStep.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 DiffPlug
+ * Copyright 2021-2022 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -33,7 +33,7 @@ public class DiktatStep {
 	// prevent direct instantiation
 	private DiktatStep() {}
 
-	private static final String DEFAULT_VERSION = "0.4.0";
+	private static final String DEFAULT_VERSION = "1.0.1";
 	static final String NAME = "diktat";
 	static final String PACKAGE_DIKTAT = "org.cqfn.diktat";
 	static final String PACKAGE_KTLINT = "com.pinterest.ktlint";