sysutils/elephant: Update to 2.17.1

While here, remove Go version pinning.[1]

Changelog:

• https://github.com/abenz1267/elephant/releases/tag/v2.17.0
• https://github.com/abenz1267/elephant/releases/tag/v2.17.1

Reported by: GitHub (watch releases),

		adamw (via private email) [1]