docs: Fixing Ubuntu installation guide

Author: ScuttoZ

doc/getting-started/getting-started/installation.md

@@ -70,23 +70,22 @@ You will also need a version of bitcoind with segregated witness and `estimatesm
 
 ## To Build on Ubuntu
 
-OS version: Ubuntu 15.10 or above
+OS version: Ubuntu 22.04 or above
 
 Get dependencies:
 ```shell
-sudo apt-get update
-sudo apt-get install -y \
-  jq autoconf automake build-essential git libtool libsqlite3-dev libffi-dev \
-  python3 python3-pip net-tools zlib1g-dev libsodium-dev gettext lowdown
-pip3 install --upgrade pip
+sudo apt update
+sudo ln -snf /usr/share/zoneinfo/UTC /etc/localtime && echo UTC > /etc/timezone
+sudo apt install -y \
+  curl autoconf jq libsecp256k1-dev libsodium-dev automake build-essential git libtool libsqlite3-dev libffi-dev python3 python3-pip net-tools zlib1g-dev gettext pkg-config libssl-dev lowdown python3-mako
 curl -LsSf https://astral.sh/uv/install.sh | sh
 ```
 
-After installing uv, restart your shell or run `source ~/.bashrc` to ensure `uv` is in your PATH.
+After installing uv, restart your shell or run `source ~/.local/bin/env` to ensure `uv` is in your PATH.
 
 If you don't have Bitcoin installed locally you'll need to install that as well. It's now available via [snapd](https://snapcraft.io/bitcoin-core).
 ```shell
-sudo apt-get install snapd
+sudo apt install snapd
 sudo snap install bitcoin-core
 # Snap does some weird things with binary names; you'll
 # want to add a link to them so everything works as expected
@@ -101,18 +100,19 @@ cd lightning
 
 Checkout a release tag:
 ```shell
-git checkout v25.02
+git checkout v26.06
 ```
 
 For development or running tests, get additional dependencies:
 ```shell
-sudo apt-get install -y valgrind libpq-dev shellcheck cppcheck \
-  libsecp256k1-dev lowdown
+sudo apt install -y valgrind libpq-dev shellcheck cppcheck
 ```
 
 If you want to build the Rust plugins (cln-grpc, clnrest, cln-bip353 and wss-proxy):
 ```shell
-sudo apt-get install -y cargo rustfmt protobuf-compiler
+sudo apt install -y protobuf-compiler
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+source ~/.cargo/env
 ```
 
 > 📘