Bump testcontainers.version from 1.19.8 to 1.20.1 (#756)

Bumps `testcontainers.version` from 1.19.8 to 1.20.1.

Updates `org.testcontainers:testcontainers` from 1.19.8 to 1.20.1
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.8...1.20.1)

Updates `org.testcontainers:postgresql` from 1.19.8 to 1.20.1
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.8...1.20.1)

Updates `org.testcontainers:junit-jupiter` from 1.19.8 to 1.20.1
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.8...1.20.1)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: org.testcontainers:postgresql
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: org.testcontainers:junit-jupiter
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -35,7 +35,7 @@
 
         <mockk.version>1.13.12</mockk.version>
         <spring-cloud.version>2023.0.3</spring-cloud.version>
-        <testcontainers.version>1.19.8</testcontainers.version>
+        <testcontainers.version>1.20.1</testcontainers.version>
         <tjenestespesifikasjoner.version>1.0_20240528104756_019ab12</tjenestespesifikasjoner.version>
         <springdoc.version>2.6.0</springdoc.version>