Bump celesta.version from 8.2.0 to 8.2.1 (#252)

Bumps `celesta.version` from 8.2.0 to 8.2.1.

Updates `ru.curs:celesta-parent` from 8.2.0 to 8.2.1
- [Release notes](https://github.com/CourseOrchestra/celesta/releases)
- [Changelog](https://github.com/CourseOrchestra/celesta/blob/dev/ReleaseJenkinsfile)
- [Commits](CourseOrchestra/celesta@8.2.0...8.2.1)

Updates `ru.curs:celesta-system-services` from 8.2.0 to 8.2.1
- [Release notes](https://github.com/CourseOrchestra/celesta/releases)
- [Changelog](https://github.com/CourseOrchestra/celesta/blob/dev/ReleaseJenkinsfile)
- [Commits](CourseOrchestra/celesta@8.2.0...8.2.1)

---
updated-dependencies:
- dependency-name: ru.curs:celesta-parent
  dependency-version: 8.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: ru.curs:celesta-system-services
  dependency-version: 8.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -45,7 +45,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
         <!--dependency versions -->
-        <celesta.version>8.2.0</celesta.version>
+        <celesta.version>8.2.1</celesta.version>
         <checkstyle.version>10.26.1</checkstyle.version>
         <spring.boot.version>3.5.15</spring.boot.version>