Use JReleaser GitHub Action

[sormuras]

Replace following two workflow steps.

Rolling Early-Access (17-ea[+"SHA7"]) build triggered on push events:

bach/.github/workflows/ci.yml

Lines 75 to 83 in 175fb93

	- name: 'Release ${{ needs.setup.outputs.tag }}'
	uses: marvinpinto/action-automatic-releases@latest
	with:
	automatic_release_tag: ${{ needs.setup.outputs.tag }}
	repo_token: ${{ secrets.GITHUB_TOKEN }}
	prerelease: true
	title: "Bach ${{ needs.setup.outputs.version }}"
	files: |
	.bach/workspace/modules/*.jar

Stable 17-ea-N (soon 17[.x.y]) build, triggered manually:

bach/.github/workflows/release.yml

Lines 54 to 61 in 175fb93

	- name: 'Release ${{ env.VERSION }}'
	uses: marvinpinto/action-automatic-releases@latest
	with:
	automatic_release_tag: ${{ env.VERSION }}
	repo_token: ${{ secrets.GITHUB_TOKEN }}
	prerelease: ${{ github.event.inputs.pre-release }}
	title: "Bach ${{ env.VERSION }}"
	files: .bach/workspace/modules/*.jar