Makefile: Use portable !, not GNUish -not, with find(1). (go-gitea#24565

) (go-gitea#24572)

Backport go-gitea#24565 by @riastradh

fix go-gitea#24564

Co-authored-by: Taylor R Campbell <campbell+gitea@mumble.net>

Makefile

@@ -140,7 +140,7 @@ GO_DIRS := cmd tests models modules routers build services tools
 WEB_DIRS := web_src/js web_src/css
 
 GO_SOURCES := $(wildcard *.go)
-GO_SOURCES += $(shell find $(GO_DIRS) -type f -name "*.go" -not -path modules/options/bindata.go -not -path modules/public/bindata.go -not -path modules/templates/bindata.go)
+GO_SOURCES += $(shell find $(GO_DIRS) -type f -name "*.go" ! -path modules/options/bindata.go ! -path modules/public/bindata.go ! -path modules/templates/bindata.go)
 GO_SOURCES += $(GENERATED_GO_DEST)
 GO_SOURCES_NO_BINDATA := $(GO_SOURCES)