Diff: https://github.com/beetbox/confuse/compare/v2.1.0...v2.2.0

This is almost all find-and-replace.

I manually edited:
* pkgs/development/python-modules/notifications-android-tv/default.nix,
* pkgs/servers/home-assistant/default.nix,
* pkgs/development/tools/continuous-integration/buildbot/master.nix

A few files have not been changed in this PR because they would cause rebuilds.

This PR should have 0 rebuilds.

There is no need to disable Python packages for Python versions that are
no longer in Nixpkgs.
This change was generated using the following script:

    pattern='^\s*disabled\s*=\s*pythonOlder\s*"3\.\([0-9]\|10\)"\s*;\s*$'
    for f in $(find -name '*.nix'); do
        grep -q "$pattern" "$f" || continue
        sed -i "/$pattern/d" "$f"
        if [ $(grep -c pythonOlder "$f") == 1 ]; then
            sed -i '/^\s*pythonOlder,\s*$/d' "$f"
        fi
        nixfmt "$f"
    done

Diff: https://github.com/beetbox/confuse/compare/v1.7.0...v2.0.1

This reverts commit 65a333600d5c88a98d674f637d092807cfc12253.

This wasn't tested for correctness with something like fodwatch [0],
and should not have been (self-)merged so quickly, especially without
further review.

It also resulted in the breakage of at least one package [1] (and that's
the one we know of and was caught).

A few packages that were updated in between this commit and this revert
were not reverted back to using `rev`, but other than that, this is a
1:1 revert.

[0]: https://codeberg.org/raphaelr/fodwatch
[1]: https://github.com/NixOS/nixpkgs/pull/396904 / 758551e4587d75882aebc21a04bee960418f8ce9