doc: release: add Zephyr 3.5 as supported release

Add Zephyr 3.5 as a supported release until July 26th 2024, i.e. when
3.7 is planned to be released.

Signed-off-by: Johan Hedberg <[email protected]>

Author: Johan Hedberg

doc/releases/index.rst

@@ -58,6 +58,8 @@ Supported Releases
 +=================+================+===============+
 | `Zephyr 2.7.5`_ | 2023-06-01     | 2024-08-31    |
 +-----------------+----------------+---------------+
+| `Zephyr 3.5.0`_ | 2023-10-20     | 2024-07-26    |
++-----------------+----------------+---------------+
 | `Zephyr 3.4.0`_ | 2023-06-16     | 2024-02-29    |
 +-----------------+----------------+---------------+
 | `Zephyr 3.3.0`_ | 2023-02-19     | 2023-10-31    |
@@ -95,3 +97,4 @@ users transition from the previous release.
 .. _`Zephyr 2.7.5`: https://docs.zephyrproject.org/2.7.5/
 .. _`Zephyr 3.3.0`: https://docs.zephyrproject.org/3.3.0/
 .. _`Zephyr 3.4.0`: https://docs.zephyrproject.org/3.4.0/
+.. _`Zephyr 3.5.0`: https://docs.zephyrproject.org/3.5.0/