chore: upgrade pf4j version to 3.12.0 (#6143)

#### What type of PR is this?
/kind bug
/area core
/milestone 2.17.x

#### What this PR does / why we need it:
升级 pf4j 至 3.12.0 版本以解决插件依赖解析不正确的问题

#### Which issue(s) this PR fixes:
Fixes #5616

#### Does this PR introduce a user-facing change?
```release-note
升级 pf4j 至 3.12.0 版本以解决插件依赖解析不正确的问题
```

platform/application/build.gradle

@@ -13,7 +13,7 @@ description = 'Platform of application.'
 ext {
     commonsLang3 = "3.12.0"
     base62 = "0.1.3"
-    pf4j = '3.11.1'
+    pf4j = '3.12.0'
     javaDiffUtils = "4.12"
     guava = "32.0.1-jre"
     jsoup = '1.15.3'