Build docs for 1.9.0

Author: foosel

.github/workflows/docs.yaml

@@ -16,20 +16,20 @@ jobs:
       matrix:
         # you must not use anything but include here or the version.json generation will fail!
         include:
+          - version: "1.9.0"
+            source: "tags"
+            python: "3.7"
+            sphinx: "4.5.0"
+            mermaid: "0.7.1"
+            jinja: "3.1.1"
+            mermaid_fix: "true"
           - version: "1.8.7"
             source: "tags"
             python: "3.7"
             sphinx: "3.5.4"
             mermaid: "0.6.3"
             jinja: "3.0.3"
             mermaid_fix: "true"
-          - version: "1.9.0rc6"
-            source: "tags"
-            python: "3.7"
-            sphinx: "4.5.0"
-            mermaid: "0.7.1"
-            jinja: "3.1.1"
-            mermaid_fix: "true"
           - version: "master"
             source: "heads"
             python: "3.7"