bump jqwik.version from 1.8.2 to 1.8.4

---
updated-dependencies:
- dependency-name: net.jqwik:jqwik-engine
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: net.jqwik:jqwik-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -41,7 +41,7 @@
     <io7m.java.targetJavaVersion>21</io7m.java.targetJavaVersion>
     <io7m.org.immutables.value.version>2.10.0</io7m.org.immutables.value.version>
     <javafx.version>21.0.3</javafx.version>
-    <jqwik.version>1.8.2</jqwik.version>
+    <jqwik.version>1.8.4</jqwik.version>
     <junit.version>5.10.1</junit.version>
     <mockito.version>5.8.0</mockito.version>
   </properties>