Bump spring.version from 5.3.37 to 5.3.39

Bumps `spring.version` from 5.3.37 to 5.3.39.

Updates `org.springframework:spring-core` from 5.3.37 to 5.3.39
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.37...v5.3.39)

Updates `org.springframework:spring-framework-bom` from 5.3.37 to 5.3.39
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.37...v5.3.39)

---
updated-dependencies:
- dependency-name: org.springframework:spring-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework:spring-framework-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -105,7 +105,7 @@
         <slf4j.version>1.7.36</slf4j.version>
         <slf4j.upper.bound>3</slf4j.upper.bound>
         <logback.version>1.2.13</logback.version>
-        <spring.version>5.3.37</spring.version>
+        <spring.version>5.3.39</spring.version>
             <!-- NOTE: upgrading jGit to 6.x requires Java 11 -->
         <jgit.version>5.13.3.202401111512-r</jgit.version>
         <bytebuddy.version>1.14.18</bytebuddy.version>