Update README.md/bug_report.md/CONTRIBUTING.md

Version 89 has now been released, update cefclient links and release table in README.md

Author: amaitland

.github/ISSUE_TEMPLATE/bug_report.md

@@ -69,8 +69,8 @@ Delete this line and everything above, and then fill in the details below.
 
 - **Does this problem also occur in the `CEF` Sample Application**
     - Download one of the following:
-    - For x86 download https://cef-builds.spotifycdn.com/cef_binary_88.2.9%2Bg5c8711a%2Bchromium-88.0.4324.182_windows32_client.tar.bz2
-    - For x64 download https://cef-builds.spotifycdn.com/cef_binary_88.2.9%2Bg5c8711a%2Bchromium-88.0.4324.182_windows64_client.tar.bz2
+    - For x86 download https://cef-builds.spotifycdn.com/cef_binary_89.0.17%2Bge7bbb1d%2Bchromium-89.0.4389.114_windows32_client.tar.bz2
+    - For x64 download https://cef-builds.spotifycdn.com/cef_binary_89.0.17%2Bge7bbb1d%2Bchromium-89.0.4389.114_windows64_client.tar.bz2
 	- Extract and run cefclient.exe
 		- If you are using WPF/OffScreen run
 		```

CONTRIBUTING.md

@@ -19,8 +19,8 @@ The upstream [`CEF` forum](http://magpcss.org/ceforum/) is a valuable resource,
 It maybe helpful to run the `cefclient` application and compare output with `CefSharp`. The `WinForms` and `WPF` versions use two different rendering modes, `WPF` uses Offscreen Rendering (`OSR`). `OffScreen` also uses `OSR` mode.
 
   - Download one of the following:
-    - For x86 download https://cef-builds.spotifycdn.com/cef_binary_88.2.9%2Bg5c8711a%2Bchromium-88.0.4324.182_windows32_client.tar.bz2
-    - For x64 download https://cef-builds.spotifycdn.com/cef_binary_88.2.9%2Bg5c8711a%2Bchromium-88.0.4324.182_windows64_client.tar.bz2
+    - For x86 download https://cef-builds.spotifycdn.com/cef_binary_89.0.17%2Bge7bbb1d%2Bchromium-89.0.4389.114_windows32_client.tar.bz2
+    - For x64 download https://cef-builds.spotifycdn.com/cef_binary_89.0.17%2Bge7bbb1d%2Bchromium-89.0.4389.114_windows64_client.tar.bz2
 	- Extract and run cefclient.exe
 		- If you are using WPF/OffScreen run
 		```

README.md

@@ -88,8 +88,8 @@ If you're new to `CefSharp` and are downloading the source to check it out, plea
 | Branch                                                               | CEF Version  | VC++ Version | .Net Version | Status |
 |----------------------------------------------------------------------|------|-------|---------|-----------------|
 | [master](https://github.com/cefsharp/CefSharp/)                      | 4430 | 2015* | 4.5.2** | Development     |
-| [cefsharp/89](https://github.com/cefsharp/CefSharp/tree/cefsharp/89) | 4389 | 2015* | 4.5.2** | Pre-Release     |
-| [cefsharp/88](https://github.com/cefsharp/CefSharp/tree/cefsharp/88) | 4324 | 2015* | 4.5.2** | **Release**     |
+| [cefsharp/89](https://github.com/cefsharp/CefSharp/tree/cefsharp/89) | 4389 | 2015* | 4.5.2** | **Release**     |
+| [cefsharp/88](https://github.com/cefsharp/CefSharp/tree/cefsharp/88) | 4324 | 2015* | 4.5.2** | Unsupported     |
 | [cefsharp/87](https://github.com/cefsharp/CefSharp/tree/cefsharp/87) | 4280 | 2015* | 4.5.2** | Unsupported     |
 | [cefsharp/86](https://github.com/cefsharp/CefSharp/tree/cefsharp/86) | 4240 | 2015  | 4.5.2   | Unsupported     |
 | [cefsharp/85](https://github.com/cefsharp/CefSharp/tree/cefsharp/85) | 4183 | 2015  | 4.5.2   | Unsupported     |