Rename COPYRIGHT to LICENSE in packaging (#3184)

Author: sgagniere

debian/Makefile

@@ -83,7 +83,7 @@ install: apply-patches
 	curl -fs https://$${baseurl}/confluent-cli/binaries/$(CLI_VERSION)/confluent$${version}_windows_amd64.exe -o $${filepath}; \
 	chmod 755 $${filepath}
 
-	cp LICENSE $(DESTDIR)$(DOCPATH)/COPYRIGHT
+	cp LICENSE $(DESTDIR)$(DOCPATH)/LICENSE
 	$(DESTDIR)$(BINPATH)/confluent --version | awk -F' ' '{ print $3 }' > $(DESTDIR)$(DOCPATH)/version.txt
 
 	chown -R root:root $(DESTDIR)$(PREFIX)

debian/patches/standard_build_layout.patch

@@ -1,5 +1,5 @@
---- cli/Makefile	2025-08-21 09:54:07.241093863 -0700
-+++ debian/Makefile	2025-07-11 14:06:22.180812125 -0700
+--- cli/Makefile	2025-08-27 10:15:22.860561026 -0700
++++ debian/Makefile	2025-09-12 11:15:01.286651273 -0700
 @@ -1,143 +1,163 @@
 -SHELL := /bin/bash
 -GORELEASER_VERSION := v1.21.2
@@ -143,7 +143,7 @@
 +	curl -fs https://$${baseurl}/confluent-cli/binaries/$(CLI_VERSION)/confluent$${version}_windows_amd64.exe -o $${filepath}; \
 +	chmod 755 $${filepath}
 +
-+	cp LICENSE $(DESTDIR)$(DOCPATH)/COPYRIGHT
++	cp LICENSE $(DESTDIR)$(DOCPATH)/LICENSE
 +	$(DESTDIR)$(BINPATH)/confluent --version | awk -F' ' '{ print $3 }' > $(DESTDIR)$(DOCPATH)/version.txt
 
 +	chown -R root:root $(DESTDIR)$(PREFIX)