fix: upgrade ch.qos.logback:logback-classic from 1.5.20 to 1.5.21

Snyk has created this PR to upgrade ch.qos.logback:logback-classic from 1.5.20 to 1.5.21.

See this package in maven:
ch.qos.logback:logback-classic

See this project in Snyk:
https://app.snyk.io/org/wajda/project/d5c00906-7303-47e2-adeb-d252d56d0c2d?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

build/parent-pom/pom.xml

@@ -42,7 +42,7 @@
         <maven.build.timestamp.format>yyyy-MM-dd'T'HH:mm:ssX</maven.build.timestamp.format>
         <scala.version>2.13.17</scala.version>
         <scala.compat.version>2.13</scala.compat.version>
-        <logback.version>1.5.20</logback.version>
+        <logback.version>1.5.21</logback.version>
         <slf4j.version>2.0.13</slf4j.version>
         <json4s.version>3.6.12</json4s.version>
         <spring.version>5.2.25.RELEASE</spring.version>