Update pac4j.version to v5.7.8 (#583)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -110,7 +110,7 @@
     <maven.compiler.source>11</maven.compiler.source>
     <maven.compiler.target>11</maven.compiler.target>
     <dropwizard.version>4.0.16</dropwizard.version>
-    <pac4j.version>5.7.7</pac4j.version>
+    <pac4j.version>5.7.8</pac4j.version>
     <jax-rs-pac4j.version>6.0.1</jax-rs-pac4j.version>
     <jee-pac4j.version>7.1.0</jee-pac4j.version>
     <junit5.version>5.13.4</junit5.version>