libbpf: Start v1.4 development cycle

Bump libbpf.map to v1.4.0 to start a new libbpf version cycle.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20231123000439.12025-1-eddyz87@gmail.com

tools/lib/bpf/libbpf.map

@@ -409,3 +409,6 @@ LIBBPF_1.3.0 {
 		ring__size;
 		ring_buffer__ring;
 } LIBBPF_1.2.0;
+
+LIBBPF_1.4.0 {
+} LIBBPF_1.3.0;

tools/lib/bpf/libbpf_version.h

@@ -4,6 +4,6 @@
 #define __LIBBPF_VERSION_H
 
 #define LIBBPF_MAJOR_VERSION 1
-#define LIBBPF_MINOR_VERSION 3
+#define LIBBPF_MINOR_VERSION 4
 
 #endif /* __LIBBPF_VERSION_H */