Revert "Bump dependency-check-gradle from 7.4.4 to 8.0.0 (open-telemetry#7592)" (open-telemetry#7603)

This reverts commit 3c6b7b3.

Just until 8.0.1 is released, see
jeremylong/DependencyCheck#5306

Author: trask

conventions/build.gradle.kts

@@ -58,7 +58,7 @@ dependencies {
   implementation("gradle.plugin.com.github.johnrengelman:shadow:7.1.2")
   implementation("org.apache.httpcomponents:httpclient:4.5.14")
   implementation("com.gradle.enterprise:com.gradle.enterprise.gradle.plugin:3.12.1")
-  implementation("org.owasp:dependency-check-gradle:8.0.0")
+  implementation("org.owasp:dependency-check-gradle:7.4.4")
   implementation("ru.vyarus:gradle-animalsniffer-plugin:1.6.0")
   // When updating, also update dependencyManagement/build.gradle.kts
   implementation("net.bytebuddy:byte-buddy-gradle-plugin:1.12.22")