depends: Avoid using the `-ffile-prefix-map` compiler option
This PR is similar to https://github.com/bitcoin/bitcoin/pull/31337 and applies analogous changes to all dependency packages.
The issue was recently noticed when -ffile-prefix-map was added to the libevent package, which is built in OSS-Fuzz.
This PR replaces -ffile-prefix-map in all packages for consistency.