build(deps): bump testcontainers.version from 1.20.3 to 1.20.4 (#2116)

Bumps `testcontainers.version` from 1.20.3 to 1.20.4.

Updates `org.testcontainers:testcontainers-bom` from 1.20.3 to 1.20.4
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.3...1.20.4)

Updates `org.testcontainers:mssqlserver` from 1.20.3 to 1.20.4
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.3...1.20.4)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.testcontainers:mssqlserver
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

testcontainers-spring-boot-parent/pom.xml

@@ -15,7 +15,7 @@
 
 
     <properties>
-        <testcontainers.version>1.20.3</testcontainers.version>
+        <testcontainers.version>1.20.4</testcontainers.version>
         <spring.boot.version>3.3.5</spring.boot.version>
         <spring.cloud.version>2023.0.3</spring.cloud.version>
         <spring.cloud.gcp.version>5.8.0</spring.cloud.gcp.version>