ffmpeg: Add "libswresample libavcodec" to CVE_PRODUCT

ffmpeg: Add "libswresample libavcodec" to CVE_PRODUCT

Currently, CVE_PRODUCT only detects vulnerabilities where the product is "ffmpeg".

However, there are also vulnerabilities where the product is "libswresample",
and "libavcodec" as shown below.
https://app.opencve.io/vendors/?vendor=ffmpeg

Therefore, add "libswresample libavcodec" to CVE_PRODUCT to detect vulnerabilities
where the product is "libswresample libavcodec" as well.

Signed-off-by: aszh07 <mail2szahir@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 9684eba5c543de229108008e29afd1dd021a9799)
Signed-off-by: Steve Sakoman <steve@sakoman.com>