fix: Upgrade pip first (frappe#1120)

* fix: Upgrade pip first

`pip` needs to be upgraded before `cryptography` to avoid version compatibility error.

* fix: Add setuptools-rust in upgrade.

* fix: Install setuptools-rust

* fix: Add setuptools-rust in requirments.txt

* fix: Revert unwanted addition to README

* fix: Install setuptools-rust beforehand.

* fix: Upgrade pip beforehand.

* fix: Upgrade pip separately beforehand.

* fix: Upgrade setuptools-rust with pip.

* chore: Remove unused dependency

Co-authored-by: gavin <gavin18d@gmail.com>

install.py

@@ -170,8 +170,11 @@ def install_prerequisites():
 	install_package('git')
 	install_package('pip3', 'python3-pip')
 
+	run_os_command({
+		'python3': "sudo -H python3 -m pip install --upgrade pip setuptools-rust"
+	})
 	success = run_os_command({
-		'python3': "sudo -H python3 -m pip install --upgrade setuptools wheel cryptography ansible~=2.8.15 pip"
+		'python3': "sudo -H python3 -m pip install --upgrade setuptools wheel cryptography ansible~=2.8.15"
 	})
 
 	if not (success or shutil.which('ansible')):