Drop Fedora 36 and add Fedora 38

Fedora 36 started failing in the CI, apparantly because it's been EOL
for a while. This commit removes it from the test matrix. At the same
time we add Fedora 38 to the test matrix.

.github/workflows/main.yml

@@ -104,9 +104,8 @@ jobs:
           - ubuntu:22.04
           - ubuntu:23.04
           - ubuntu:23.10
-          - fedora:35
-          - fedora:36
           - fedora:37
+          - fedora:38
     steps:
       - name: Check out code
         uses: actions/checkout@v3

README.md

@@ -172,9 +172,8 @@ Please visit [Zivid Knowledge Base][zivid-knowledge-base-url] for general inform
 | Ubuntu 23.04     | 3.11                      |
 | Ubuntu 22.04     | 3.10                      |
 | Ubuntu 20.04     | 3.8                       |
+| Fedora 38        | 3.11                      |
 | Fedora 37        | 3.11                      |
-| Fedora 36        | 3.10                      |
-| Fedora 35        | 3.10                      |
 | Windows 10       | 3.7, 3.8, 3.9, 3.10, 3.11 |
 
 [header-image]: https://www.zivid.com/hubfs/softwarefiles/images/zivid-generic-github-header.png