Support RPM distros with newer RPM db formats (#1018)

* Support RPM distros with newer db formats

Recent RPM distros (Fedora 33+, CBL-Mariner 2.0+, amazonlinux 2022+)
use an sqlite package database in /var/lib/rpm/rpmdb.sqlite, or
"ndb" format (SUSE).

Remove anchore's fork in favour of the upstream,
https://github.com/knqyf263/go-rpmdb, to gain support for
these formats.

Signed-off-by: Tom Fay <tomfay@microsoft.com>

* add exception for modernc.org repos

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* shorten rpmdb helper function

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

Co-authored-by: Alex Goodman <alex.goodman@anchore.com>

.bouncer.yaml

@@ -21,3 +21,32 @@ ignore-packages:
   # All these files have been put into the public domain.
   # You can do whatever you want with these files.
   - github.com/xi2/xz
+
+  # from: https://gitlab.com/cznic/sqlite/-/blob/v1.15.4/LICENSE
+  # This is a BSD-3-Clause license
+  - modernc.org/libc
+  - modernc.org/libc/errno
+  - modernc.org/libc/fcntl
+  - modernc.org/libc/fts
+  - modernc.org/libc/grp
+  - modernc.org/libc/langinfo
+  - modernc.org/libc/limits
+  - modernc.org/libc/netdb
+  - modernc.org/libc/netinet/in
+  - modernc.org/libc/poll
+  - modernc.org/libc/pthread
+  - modernc.org/libc/pwd
+  - modernc.org/libc/signal
+  - modernc.org/libc/stdio
+  - modernc.org/libc/stdlib
+  - modernc.org/libc/sys/socket
+  - modernc.org/libc/sys/stat
+  - modernc.org/libc/sys/types
+  - modernc.org/libc/termios
+  - modernc.org/libc/time
+  - modernc.org/libc/unistd
+  - modernc.org/libc/utime
+  - modernc.org/libc/uuid/uuid
+  - modernc.org/libc/wctype
+  - modernc.org/mathutil
+  - modernc.org/memory