Separate legacy and modern steps into separate jobs #322

	name: Continuous Integration

	on:
	workflow_call:
	pull_request:
	branches: ['*']
	push:
	branches: ['*']

	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

	jobs:
	build-legacy:
	name: Build and Test on legacy JDK and Spark
	runs-on: ubuntu-latest
	steps:
	- name: Checkout current branch (full)
	uses: actions/checkout@v4
	- uses: coursier/cache-action@v6
	with:
	extraKey: ${{ runner.os }}
	- uses: coursier/setup-action@v1
	with:
	jvm: adopt:1.8
	- name: Build, test, and package project on "legacy" Spark
	run: bin/sbt clean compile test package makePom
	build-modern:
	name: Build and Test on Modern JDK and Spark
	runs-on: ubuntu-latest
	steps:
	- name: Checkout current branch (full)
	uses: actions/checkout@v4
	- uses: coursier/cache-action@v6
	with:
	extraKey: ${{ runner.os }}
	- uses: coursier/setup-action@v1
	with:
	jvm: adoptium:1.17
	- name: Build, test, and package project on Spark 3.5
	run: bin/sbt clean compile test package makePom -DsparkVersion=3.5.1
	env:
	MODERN_JAVA: true

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