Merge branch 'upstream-bump-1.4.0' into 'master'

Update version to 1.4.0 in nvc.h

See merge request nvidia/container-toolkit/libnvidia-container!63

Author: klueska

src/nvc.h

@@ -14,9 +14,9 @@ extern "C" {
 #endif /* __cplusplus */
 
 #define NVC_MAJOR   1
-#define NVC_MINOR   3
-#define NVC_PATCH   3
-#define NVC_VERSION "1.3.3"
+#define NVC_MINOR   4
+#define NVC_PATCH   0
+#define NVC_VERSION "1.4.0"
 
 #define NVC_ARG_MAX 256