Regenerate Runtime 0.20 release note (#904)

Addresses
https://github.com/Qiskit/qiskit-ibm-runtime/issues/1428#issuecomment-1966573960.

I also updated the dev docs to the latest CI build, but only one image
changed.

docs/api/qiskit-ibm-runtime/release-notes.md

@@ -26,6 +26,8 @@ in_page_toc_max_heading_level: 2
 
     Note that `Session` and `Batch` created from `qiskit-ibm-runtime` prior to this release will no longer be supported after March 31, 2024. Please update your `qiskit-ibm-runtime` version as soon as possible before this date.
 
+    Also note that using simulators with sessions is no longer supported. Users can still start sessions with simulators without any issues but a session will not actually be created. There will be no session ID.
+
 *   Sessions started with [`qiskit_ibm_runtime.IBMBackend.open_session()`](qiskit_ibm_runtime.IBMBackend#open_session "qiskit_ibm_runtime.IBMBackend.open_session") will use the new `/sessions` endpoint.
 
     The sessions functionality will not change but note that `backend.run()` sessions prior to this release will no longer be supported after March 31, 2024. Please update your `qiskit-ibm-runtime` version as soon as possible before this date.

scripts/api-html-artifacts.json

@@ -33,7 +33,7 @@
     "0.7": "https://ibm.box.com/shared/static/t2vuik7bqboata3i34r4a83baabo95xn.zip"
   },
   "qiskit-ibm-runtime": {
-    "dev": "https://ibm.box.com/shared/static/0bcr09epud50i3czdx791iagumrf5bjz.zip",
+    "dev": "https://ibm.box.com/shared/static/j4o6bvkmfndk9ib9h5wp2u3sprj9n6tv.zip",
     "0.20": "https://ibm.box.com/shared/static/0bcr09epud50i3czdx791iagumrf5bjz.zip",
     "0.19": "https://ibm.box.com/shared/static/ojpnzc71aex4d8itnktwbp9m7l15nazs.zip",
     "0.18": "https://ibm.box.com/shared/static/rbjdfogq8t1a4tquw1bh6gy4qdcv521v.zip",