[packit] 0.22.0 upstream release

Upstream tag: 0.22.0
Upstream commit: e49e5e3f

If you need to do any change in this pull request, you need to locally fetch the source branch of it and push it (with a fix) to your fork (as it is not possible to push to the branch created in the Packit’s fork):
```
git fetch https://src.fedoraproject.org/forks/packit-stg/rpms/python-specfile.git refs/heads/*:refs/remotes/packit-stg/*
git checkout packit-stg/0.22.0-f38-update-propose_downstream
```

plans/main.fmf

@@ -1,6 +1,6 @@
 discover:
     how: fmf
     url: https://github.com/packit/specfile.git
-    ref: 56360c0a80b102065e71ccee587b155dfc83317e
+    ref: e49e5e3ff191480046b4c509feacbc0973907d11
 execute:
     how: tmt

plans/packit-integration.fmf

@@ -2,7 +2,7 @@ discover:
     how: fmf
     url: https://github.com/packit/packit
     filter: tier:0 | tier:1
-    ref: 804c96beeb46dbb0ef209e545bd46735809628a0
+    ref: 6208d3bf6bd7b22fcf9e7658e1ffd163fbab0b62
 prepare:
   - how: install
     copr: packit/packit-dev
@@ -21,7 +21,7 @@ adjust:
       - how: install
         package: python3-pip
       - how: shell
-        script: pip3 install flexmock deepdiff
+        script: pip3 install flexmock deepdiff==6.3.1
   - when: distro == rhel-8 or distro == centos-8 or distro == centos-stream-8
     because: packit doesn't support EL 8
     enabled: false

plans/performance.fmf

@@ -0,0 +1,11 @@
+summary:
+  Performance tests
+discover+:
+  filter: tier:3
+prepare:
+  - how: install
+    package: python3-pip
+  - how: shell
+    script: pip3 install pytest-fail-slow
+  - how: shell
+    script: curl --output-dir /tmp -O https://src.fedoraproject.org/rpms/texlive/raw/rawhide/f/texlive.spec