New icons v0.181.0

@ generate:changelog /home/runner/work/lucide/lucide
node ./scripts/generateChangelog.mjs "--old-tag=v0.180.0"

New icons 🎨

• arrow-down-square (#994) by @danielbayley
• arrow-left-square (#994) by @danielbayley
• arrow-right-square (#994) by @danielbayley
• arrow-up-square (#994) by @danielbayley
• square-dot (#994) by @danielbayley
• square-equal (#994) by @danielbayley
• square-slash (#994) by @danielbayley