Bump org.assertj:assertj-core from 3.25.3 to 3.26.3 (#124)

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.25.3 to 3.26.3.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.25.3...assertj-build-3.26.3)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -22,7 +22,7 @@ internal val coroutinesVersion = "1.8.0"
 internal val ktorVersion = "2.3.10"
 internal val saveVersion = "0.3.3"
 internal val junitVersion = "5.10.2"
-internal val assertjVersion = "3.25.3"
+internal val assertjVersion = "3.26.3"
 
 dependencies {
     implementation(kotlin("stdlib-jdk8"))