chore: bump version to 3.4rc0 for pre-release (#4357)

Signed-off-by: Terri Oda <[email protected]>

Author: terriko

cve_bin_tool/version.py

@@ -8,7 +8,7 @@
 from cve_bin_tool.log import LOGGER
 from cve_bin_tool.util import make_http_requests
 
-VERSION: str = "3.3.1dev0"
+VERSION: str = "3.4rc0"
 
 HTTP_HEADERS: dict = {
     "User-Agent": f"cve-bin-tool/{VERSION} (https://github.com/intel/cve-bin-tool/)",