doc: small install doc updates

docs/INSTALL.md

@@ -58,8 +58,7 @@ Then build and install a local copy of libsecp256k1 for python-bitcointx:
     cd deps
     git clone https://github.com/bitcoin-core/secp256k1.git
     cd secp256k1
-    git checkout v0.4.1
-    make clean
+    git checkout v0.5.0
     ./autogen.sh
     ./configure --prefix JM_ROOT --enable-module-recovery --enable-experimental --enable-module-ecdh --enable-benchmark=no
     make
@@ -98,7 +97,7 @@ If you have installed this "full" version of the client, you can use it with the
     ```
     git clone https://github.com/bitcoin-core/secp256k1
     cd secp256k1
-    git checkout 490022745164b56439688b0fc04f9bd43578e5c3
+    git checkout v0.5.0
     ./autogen.sh
     ./configure --enable-module-recovery --disable-jni --enable-experimental --enable-module-ecdh --enable-benchmark=no
     make
@@ -151,7 +150,6 @@ There are currently two choices for installing on Windows; one, directly install
 
 #### Installation directly on Windows
 
-As per the note above, binaries for JoinmarketQt are being offered with releases as of 0.7.0+.
 This section is for doing a full command line install, on Windows.
 
 First, if you have not done so, install [Python](https://www.python.org/downloads/windows/) - specifically, the latest Python 3 version. Make sure to choose to install `pip` during the installation (it should be included automatically, but you can choose the custom installation option to choose it).
@@ -188,7 +186,7 @@ From here, go to `Configuring Joinmarket` below.
  3. When asked, choose to restart.
 
 ##### Install Ubuntu from the Microsoft Store
-1. Open the `Microsoft Store`, search for `Ubuntu 18.04 LTS` and click `Get`.
+1. Open the `Microsoft Store`, search for `Ubuntu 24.04.1 LTS` and click `Get`.
 > note: other distributions are available, but this is the only one tested
 2. When finished downloading click `Launch`.
 3. A window should pop up, telling your `Installing, this may take a few minutes...`