few fixes to make it actually run

patches/server/0003-Build-system-changes.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Build system changes
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index fddf2f440356425d948f40dcf9d9853a374ddc8e..32fee49011b630407d6fd1c66838a833a706741a 100644
+index b038528ba5ab9790a6bdb1c51ff072f9b8a64bf8..25fa56d26bd88e4647b4c25ad6783ff90a05b2c4 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
-@@ -15,21 +15,24 @@ repositories {
+@@ -20,21 +20,24 @@ repositories {
  dependencies {
      implementation(project(":Paper-API"))
      implementation("jline:jline:2.12.1")
@@ -37,8 +37,8 @@ index fddf2f440356425d948f40dcf9d9853a374ddc8e..32fee49011b630407d6fd1c66838a833
      testImplementation("junit:junit:4.13.1")
      testImplementation("org.hamcrest:hamcrest-library:1.3")
  }
-@@ -42,7 +45,8 @@ tasks.jar {
-             "Implementation-Vendor" to Instant.now().epochSecond,
+@@ -47,7 +50,8 @@ tasks.jar {
+             "Implementation-Vendor" to SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'").format(Date()), // Paper
              "Specification-Title" to "Bukkit",
              "Specification-Version" to project.version,
 -            "Specification-Vendor" to "Bukkit Team"
@@ -47,7 +47,7 @@ index fddf2f440356425d948f40dcf9d9853a374ddc8e..32fee49011b630407d6fd1c66838a833
          ))
          for (tld in listOf("net", "com", "org")) {
              attributes(mapOf(
-@@ -54,7 +58,7 @@ tasks.jar {
+@@ -59,7 +63,7 @@ tasks.jar {
  
  tasks.shadowJar {
      listOf(