install: clarify distro required dependencies

From Fedora 40?, `libsodium-devel` is required for `_get_nacl()`

remove extra Debian pkg installation dependencies

`python3-wheel` shouldn’t be necessary with `pipx` installation
The two others are development dependencies are probably here
in case wheels have to be built because there are missing

Not sure if this is still needed with more recent distros
Distros such as Mint and Raspbian might have wrong dependency tree

docs/install_pipx.md

@@ -25,7 +25,7 @@ On a Unix system, run in your shell following commands:
 
 === "Fedora"
     ```
-    sudo dnf install libsodium
+    sudo dnf install libsodium-devel
     ```
 
 === "macOS"
@@ -52,12 +52,6 @@ Check [`pipx` documentation](https://pipx.pypa.io/stable/) for an extended insta
     brew install python3 pipx
     ```
 
-Following packages might be necessary:
-
-```
-sudo apt install libffi-dev python3-wheel libssl-dev
-```
-
 ## Install with pipx
 
 [pipx](https://pypa.github.io/pipx/) tool is recommended for Python executables.