Bump spring-core from 5.3.16 to 5.3.20 in /sqldev

Bumps [spring-core](https://github.com/spring-projects/spring-framework) from 5.3.16 to 5.3.20.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.16...v5.3.20)

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

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

Author: dependabot[bot]

sqldev/pom.xml

@@ -212,7 +212,7 @@
 			<!-- transitive reference, but IntelliJ wants to have it explicit (to avoid warnings) -->
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-core</artifactId>
-			<version>5.3.16</version>
+			<version>5.3.20</version>
 		</dependency>
 		<dependency>
 			<!-- used for HtmlUtils.htmlEscape in RunnerPanel -->