Update all non-major dependencies to v2.7.8 (#11)

Co-authored-by: Renovate Bot <[email protected]>

Author: osoykan

gradle/libs-test.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 kotlinx = "1.6.4"
-spring-boot = "2.7.7"
+spring-boot = "2.7.8"
 spring-kafka = "2.9.5"
 junit = "5.9.2"
 kotest = "5.5.4"

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 kotlin = "1.8.0"
 kotlinx = "1.6.4"
-spring-boot = "2.7.7"
+spring-boot = "2.7.8"
 spring-dependency-management = "1.1.0"
 spring-framework = "5.3.25"
 spring-kafka = "2.9.5"