Drop Sphinx, click version caps

stephenfin · stephenfin · commit daa249d0f27c · 2021-05-14T16:36:04.000+01:00
If future major versions break these then we'll fix them as we go. This
is just busywork otherwise.

Signed-off-by: Stephen Finucane &lt;stephen@that.guru&gt;
diff --git a/requirements.txt b/requirements.txt
@@ -1,3 +1,3 @@
-sphinx>=1.5,<5.0
-click>=6.0,<8.0
+sphinx>=2.0
+click>=6.0
 docutils
