Update tapir-apispec-docs, tapir-core, ... to 1.13.21 (#166)

Author: softwaremill-ci

build.sbt

@@ -6,7 +6,7 @@ val scalaTestV = "3.2.20"
 val circeV = "0.14.15"
 val slf4jV = "2.0.18"
 val logbackV = "1.5.34"
-val tapirV = "1.13.20"
+val tapirV = "1.13.21"
 val sttpClientV = "4.0.25"
 val zioV = "2.1.26"
 val zioProcessV = "0.8.0"