update the XUPS-MIB url to newer version

To use the eaton url, we do need to mock a valid user agent. The host
seems to check and the "default" agent defined in the Makefile is
unsufficient.

generator/Makefile

@@ -59,7 +59,7 @@ INFRAPOWER_URL    := https://www.austin-hughes.com/wp-content/uploads/2021/05/IP
 LIEBERT_URL       := https://www.vertiv.com/globalassets/documents/software/monitoring/lgpmib-win_rev16_299461_0.zip
 READYNAS_URL      := https://www.downloads.netgear.com/files/ReadyNAS/READYNAS-MIB.txt
 READYDATAOS_URL   := https://www.circitor.fr/Mibs/Mib/R/READYDATAOS-MIB.mib
-XUPS_URL          := https://www.circitor.fr/Mibs/Mib/X/XUPS-MIB.mib
+XUPS_URL          := https://www.eaton.com/content/dam/eaton/products/backup-power-ups-surge-it-power-distribution/power-management-software-connectivity/eaton-network-card-ms/eaton-ups-power-mib-release-notes.txt
 
 CYBERPOWER_VERSION := 2.11
 CYBERPOWER_URL     := https://dl4jz3rbrsfum.cloudfront.net/software/CyberPower_MIB_v$(CYBERPOWER_VERSION).MIB.zip
@@ -375,4 +375,4 @@ $(MIBDIR)/readydataos:
 
 $(MIBDIR)/XUPS-MIB.mib:
 	@echo ">> Downloading XUPS-MIB.mib"
-	@curl $(CURL_OPTS) $(CURL_USER_AGENT) -o $(MIBDIR)/XUPS-MIB.mib "$(XUPS_URL)"
+	@curl $(CURL_OPTS) -H "User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0" --compressed -o $(MIBDIR)/XUPS-MIB.mib "$(XUPS_URL)"