Make cryptography a valid dependency for emscripten targets

Since only the special cryptography package bundled with pyodide can be
used, relax the version requirement to anything that's version 39.*.

Fix #284

setup.cfg

@@ -35,7 +35,7 @@ install_requires =
     appdirs >= 1.4; platform_system!='Emscripten'
     bt-test-interfaces >= 0.0.2; platform_system!='Emscripten'
     click == 8.1.3; platform_system!='Emscripten'
-    cryptography == 39; platform_system!='Emscripten'
+    cryptography == 39.*
     grpcio == 1.57.0; platform_system!='Emscripten'
     humanize >= 4.6.0; platform_system!='Emscripten'
     libusb1 >= 2.0.1; platform_system!='Emscripten'

web/bumble.js

@@ -74,7 +74,6 @@ export async function loadBumble(pyodide, bumblePackage) {
     await pyodide.loadPackage("micropip");
     await pyodide.runPythonAsync(`
         import micropip
-        await micropip.install("cryptography")
         await micropip.install("${bumblePackage}")
         package_list = micropip.list()
         print(package_list)