feat: add comment on how to obtain skipped projects in Kafka build

Author: dervoeti

kafka/stackable/patches/3.7.1/001-cyclonedx-plugin.patch

@@ -1,8 +1,8 @@
 diff --git a/build.gradle b/build.gradle
-index 32e6e8f..33e12a8 100644
+index 32e6e8f..13a0def 100644
 --- a/build.gradle
 +++ b/build.gradle
-@@ -48,6 +48,45 @@ plugins {
+@@ -48,6 +48,47 @@ plugins {
    // artifacts - see https://github.com/johnrengelman/shadow/issues/901
    id 'com.github.johnrengelman.shadow' version '8.1.0' apply false
    id 'com.diffplug.spotless' version '6.14.0' apply false // 6.14.1 and newer require Java 11 at compile time, so we can't upgrade until AK 4.0
@@ -21,6 +21,8 @@ index 32e6e8f..33e12a8 100644
 +    // The file format generated, can be xml, json or all for generating both. Defaults to 'all'
 +    outputFormat = "json"
 +    includeConfigs = ["runtimeClasspath"]
++    // Exclude test components. This list needs to be checked and, if it changed, updated for every new Kafka version.
++    // The list can be obtained by running `gradle projects | grep upgrade-system-tests`
 +    skipProjects = [
 +      'upgrade-system-tests-0100',
 +      'upgrade-system-tests-0101',

kafka/stackable/patches/3.8.0/001-cyclonedx-plugin.patch

@@ -1,8 +1,8 @@
 diff --git a/build.gradle b/build.gradle
-index 92082fe..bd7f6e2 100644
+index 92082fe..e3d6c72 100644
 --- a/build.gradle
 +++ b/build.gradle
-@@ -48,6 +48,46 @@ plugins {
+@@ -48,6 +48,48 @@ plugins {
    // artifacts - see https://github.com/johnrengelman/shadow/issues/901
    id 'com.github.johnrengelman.shadow' version '8.1.0' apply false
    id 'com.diffplug.spotless' version '6.14.0' apply false // 6.14.1 and newer require Java 11 at compile time, so we can't upgrade until AK 4.0
@@ -21,6 +21,8 @@ index 92082fe..bd7f6e2 100644
 +    // The file format generated, can be xml, json or all for generating both. Defaults to 'all'
 +    outputFormat = "json"
 +    includeConfigs = ["runtimeClasspath"]
++    // Exclude test components. This list needs to be checked and, if it changed, updated for every new Kafka version.
++    // The list can be obtained by running `gradle projects | grep upgrade-system-tests`
 +    skipProjects = [
 +      'upgrade-system-tests-0100',
 +      'upgrade-system-tests-0101',