Bump the all-dependencies group across 1 directory with 4 updates

Bumps the all-dependencies group with 4 updates in the / directory: [org.testcontainers:testcontainers](https://github.com/testcontainers/testcontainers-java), [org.testcontainers:junit-jupiter](https://github.com/testcontainers/testcontainers-java), [org.testcontainers:postgresql](https://github.com/testcontainers/testcontainers-java) and [org.springframework.boot](https://github.com/spring-projects/spring-boot).


Updates `org.testcontainers:testcontainers` 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:junit-jupiter` 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:postgresql` 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:junit-jupiter` 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:postgresql` 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.springframework.boot` from 3.3.5 to 3.4.0
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.3.5...v3.4.0)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: org.testcontainers:junit-jupiter
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: org.testcontainers:postgresql
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: org.testcontainers:junit-jupiter
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: org.testcontainers:postgresql
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: org.springframework.boot
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -2,7 +2,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 val mockkVersion = "1.13.13"
 val logstashVersion = "8.0"
-val testContainersVersion = "1.20.3"
+val testContainersVersion = "1.20.4"
 val springDocVersion = "2.6.0"
 val tokenValidationVersion = "5.0.11"
 val kotlinVersion = "2.0.21"
@@ -13,7 +13,7 @@ repositories {
 
 plugins {
     val kotlinVersion = "2.0.0"
-    id("org.springframework.boot") version "3.3.5"
+    id("org.springframework.boot") version "3.4.0"
     kotlin("jvm") version kotlinVersion
     kotlin("plugin.spring") version kotlinVersion
     kotlin("plugin.jpa") version kotlinVersion