Update website for v0.5.5 (microsoft#6401)

Author: ekzhu

.github/ISSUE_TEMPLATE/1-bug_report.yml

@@ -90,6 +90,7 @@ body:
       multiple: false
       options:
         - "Python dev (main branch)"
+        - "Python 0.5.5"
         - "Python 0.5.4"
         - "Python 0.5.3"
         - "Python 0.5.2"

.github/workflows/docs.yml

@@ -33,7 +33,7 @@ jobs:
           [
             # For main use the workflow target
             { ref: "${{github.ref}}", dest-dir: dev, uv-version: "0.5.13", sphinx-release-override: "dev" },
-            { ref: "python-v0.5.4", dest-dir: stable, uv-version: "0.5.13", sphinx-release-override: "stable" },
+            { ref: "python-v0.5.5", dest-dir: stable, uv-version: "0.5.13", sphinx-release-override: "stable" },
             { ref: "v0.4.0.post1", dest-dir: "0.4.0", uv-version: "0.5.13", sphinx-release-override: "" },
             { ref: "v0.4.1", dest-dir: "0.4.1", uv-version: "0.5.13", sphinx-release-override: "" },
             { ref: "v0.4.2", dest-dir: "0.4.2", uv-version: "0.5.13", sphinx-release-override: "" },
@@ -48,6 +48,7 @@ jobs:
             { ref: "python-v0.5.2", dest-dir: "0.5.2", uv-version: "0.5.13", sphinx-release-override: "" },
             { ref: "python-v0.5.3", dest-dir: "0.5.3", uv-version: "0.5.13", sphinx-release-override: "" },
             { ref: "python-v0.5.4", dest-dir: "0.5.4", uv-version: "0.5.13", sphinx-release-override: "" },
+            { ref: "python-v0.5.5", dest-dir: "0.5.5", uv-version: "0.5.13", sphinx-release-override: "" },
           ]
     steps:
       - name: Checkout

docs/switcher.json

@@ -5,11 +5,16 @@
         "url": "/autogen/dev/"
     },
     {
-        "name": "0.5.4 (stable)",
+        "name": "0.5.5 (stable)",
         "version": "stable",
         "url": "/autogen/stable/",
         "preferred": true
     },
+    {
+        "name": "0.5.4",
+        "version": "0.5.4",
+        "url": "/autogen/0.5.4/"
+    },
     {
         "name": "0.5.3",
         "version": "0.5.3",