update dependency in docs

docs/installation.md

@@ -286,7 +286,7 @@ You will need to build `wlroots` and `scenefx` manually as well.
    Clone and install the specific version required (check README for latest version).
 
    ```bash
-   git clone -b 0.19.3 https://gitlab.freedesktop.org/wlroots/wlroots.git
+   git clone -b 0.20.2 https://gitlab.freedesktop.org/wlroots/wlroots.git
    cd wlroots
    meson build -Dprefix=/usr
    sudo ninja -C build install
@@ -296,7 +296,7 @@ You will need to build `wlroots` and `scenefx` manually as well.
    This library handles the visual effects.
 
    ```bash
-   git clone -b 0.4.1 https://github.com/wlrfx/scenefx.git
+   git clone -b 0.5.0 https://github.com/wlrfx/scenefx.git
    cd scenefx
    meson build -Dprefix=/usr
    sudo ninja -C build install

nix/default.nix

@@ -19,7 +19,7 @@
   meson,
   ninja,
   scenefx,
-  wlroots_0_19,
+  wlroots_0_20,
   libGL,
   enableXWayland ? true,
   debug ? false,
@@ -56,7 +56,7 @@ stdenv.mkDerivation {
       pixman
       wayland
       wayland-protocols
-      wlroots_0_19
+      wlroots_0_20
       scenefx
       libGL
       libdrm