ci: cat curses.h for solaris #1222

Job	Run time
build-ubuntu-latest-minimal-clang	1m 0s
build-ubuntu-latest-full-featured-clang	1m 1s
build-ubuntu-latest-full-featured-gcc	55s
build-ubuntu-latest-gcc-static	55s
build-ubuntu-latest-minimal-gcc	41s
build-ubuntu-latest-pcp	24s
build-dragonflybsd-latest-gcc	2m 23s
build-macos-latest-clang	53s
build-freebsd-latest-clang	2m 3s
build-netbsd-latest-gcc	2m 31s
build-openbsd-latest-clang	2m 28s
build-solaris-latest-gcc	6m 29s
build-ubuntu-latest-clang-analyzer	1m 14s
build-ubuntu-latest-clang-sanitizer	1m 0s
lint-pcp-config	4s
lint-whitespace	3s
	24m 4s

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