Bump spring-core from 5.2.1.RELEASE to 5.2.22.RELEASE (#186)

Bumps [spring-core](https://github.com/spring-projects/spring-framework) from 5.2.1.RELEASE to 5.2.22.RELEASE.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.2.1.RELEASE...v5.2.22.RELEASE)

---
updated-dependencies:
- dependency-name: org.springframework:spring-core
  dependency-type: direct:production
...

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

pom.xml

@@ -16,7 +16,7 @@
   <properties>
     <project_name>migration-utils</project_name>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <spring.version>5.2.1.RELEASE</spring.version>
+    <spring.version>5.2.22.RELEASE</spring.version>
     <fcrepo-storage-ocfl.version>6.2.0-SNAPSHOT</fcrepo-storage-ocfl.version>
     <lucene.version>7.1.0</lucene.version>
     <jena.version>4.2.0</jena.version>