Limit the maximum Maven Plug-in API version to be at most 3.6.4 (save…

…ourtool#1634)

### What's done:

 - Versions 3.7.0+ are incompatible.
 - Fixes saveourtool#1632.

New patch release

Revert 1.2.4 to 1.2.3

Fix the race condition introduced with 3470888 (saveourtool#1555)

### What's done:

 - Original issue: saveourtool#1548.
 - Original PR: saveourtool#1553.
 - This change reverts 3470888.
 - Enhances the KDoc of `DiktatRule`.
 - Fixes saveourtool#1548.

gradle-plugin: treat SarifReportMergeTask as non-mandatory (saveourto…

…ol#1487)

### What's done:
* Root project might not have a task `mergeDiktatReports`

This pull request closes saveourtool#1484

Simplify Maven configuration by running `DiktatSaveSmokeTest` as an i…

…ntegration test (saveourtool#1482)

### What's done:

 * Finally, fixes saveourtool#1478.

Bugfixing of single binary expression wrapped in parentheses (long li…

…nes rule) (saveourtool#1416)

### What's done:
- Fixing following binary expressions (selfRole.isHigherOrEqualThan(Role.OWNER) || userRole.isLowerThan(selfRole))

Added this operator references to the list with similar operator refe…

…rences (saveourtool#1393)

### Whats added:
 * Add 2 operator references
 * Corrected comment

### Issue(saveourtool#1393)

Rollback nexus-staging-maven-plugin to 1.6.8 (saveourtool#1267)

Gradle support