Set version 6.1.1 and release date in changelog

Merged-by: Stefan Walter <[email protected]>

Author: swltr

gradle/common.gradle

@@ -18,7 +18,7 @@ else if (System.env.CI_PIPELINE_IID) {
 // - The minor version number should be incremented when new feature were added.
 // - The patch level should be incremented with every small change to the code
 //   (e.g. bugfixes).
-project.version = "6.1.0"
+project.version = "6.1.1"
 if (!(project.hasProperty("NO_BUILD_NUMBER")
     && Boolean.valueOf(project.getProperties().get("NO_BUILD_NUMBER")))) {
   project.version += "-$versionBuild"

openTCS-Documentation/src/docs/release-notes/changelog.adoc

@@ -12,7 +12,7 @@ The openTCS developers
 
 This change log lists the most relevant changes for past releases in reverse chronological order.
 
-== Unreleased
+== Version 6.1.1 (2024-09-16)
 
 * Bugs fixes:
 ** Correctly enable/disable controls in the Operations Desk application when it is connected to / disconnected from the kernel.