upgpkg: discord 1:0.0.89: Upstream rollback to 0.0.89

Upstream has rolled back to 0.0.89 due to an issue with
voice sound on 0.0.90.

See https://discordstatus.com/incidents/mv9k3px764kd

.SRCINFO

@@ -2,6 +2,7 @@ pkgbase = discord_arch_electron
 	pkgdesc = Discord using system provided electron for increased security and performance
 	pkgver = 0.0.89
 	pkgrel = 1
+	epoch = 1
 	url = https://discord.com
 	install = discord_arch_electron.install
 	arch = any

PKGBUILD

@@ -11,6 +11,7 @@ _electron=electron
 pkgname=${_pkgname}_arch_electron
 pkgver=0.0.89
 pkgrel=1
+epoch=1
 pkgdesc="Discord using system provided ${_electron} for increased security and performance"
 arch=('any')
 provides=("${_pkgname}")