fix(build): drop hand-wired assembleRequirements lifecycle

[jimisola]

What & Why

This repo hand-wires assembleRequirements into the build lifecycle:

tasks.named('build') {
    finalizedBy tasks.named('assembleRequirements')
}

tasks.named('assembleRequirements') {
    dependsOn tasks.named('test')
}

The plugin does this itself, and as of 1.0.1 it wires it the other way round: build dependsOn assembleRequirements dependsOn check. This file says build finalizedBy assembleRequirements — the task runs after build — while the plugin says build needs it first. Gradle rejects the contradiction at configuration time and nothing compiles:

* What went wrong:
Circular dependency between the following tasks:
:assembleRequirements
     \--- :assembleRequirements (*)

That is the mirror image of reqstool/reqstool-java-gradle-plugin#88, which was the same collision in the opposite direction. Without this PR, the Renovate bump to 1.0.1 lands red.

Verified, both directions

Against 1.0.1 built from the plugin fix and published to mavenLocal:

current build.gradle	BUILD FAILED — Circular dependency
this PR's build.gradle	BUILD SUCCESSFUL — test → check → assembleRequirements → build

Safe to land before the 1.0.1 bump. On the current 0.1.2 the plugin's own build finalizedBy assembleRequirements still runs the task, and build already runs test, so the removed dependsOn test was redundant there too. Confirmed with a real (not dry-run) build on 0.1.2 after removing the lines — the zip is produced intact:

reqstool-demo-0.1.0-reqstool/annotations.yml
reqstool-demo-0.1.0-reqstool/test_results/TEST-…SVCsTest.xml
reqstool-demo-0.1.0-reqstool/test_results/TEST-…DemoApplicationTestsIT.xml
reqstool-demo-0.1.0-reqstool/reqstool_config.yml
…

So this can merge now and the 1.0.1 bump will be green whenever it arrives; ordering between the two is not load-bearing.

Author checklist

• Conventional Commit title
• DCO sign-off
• Verified on both the current (0.1.2) and the incoming (1.0.1) plugin
• Artifact contents unchanged — zip still carries annotations and both test-result XMLs
• Only build.gradle touched

Test Plan

1. CI green on this PR (still on 0.1.2).
2. gradle build locally: assembleRequirements runs, build/reqstool/*.zip produced with test_results/.
3. After the 1.0.1 bump merges, gradle build configures without a circular-dependency error and orders check before assembleRequirements.

Refs: reqstool/reqstool-java-gradle-plugin#88