0.45.0-rc2

chore(cmake): bump libs to `0.26.0-rc2`

Pin `FALCOSECURITY_LIBS_VERSION` to the `0.26.0-rc2` tag, cut from the
libs `release/0.26.x` branch. `DRIVER_VERSION` stays at
`11.0.0-rc1+driver` (no driver changes since `0.26.0-rc1`).

Signed-off-by: Leonardo Grasso <me@leonardograsso.com>