Update support information [ci skip]

Revert the warning about increasing the minimum required version of Clang
since this was abandoned.

Author: randombit

doc/support.rst

@@ -14,17 +14,13 @@ For Botan 3, the tier-1 supported platforms are
 * Linux ppc64le, GCC 11.2 or later
 * Windows x86-64, Visual C++ 2022 or later
 
-.. warning::
-
-   Starting in Botan 3.8, the minimum required version of Clang will change
-   to Clang 17.
-
 These platforms are all tested by continuous integration, and the developers
 have access to hardware in order to test patches. Problems affecting these
 platforms are considered release blockers.
 
 For Botan 3, the tier-2 supported platforms are
 
+* macOS aarch64, latest XCode Clang
 * macOS x86-64, latest XCode Clang
 * iOS aarch64, latest XCode Clang
 * Windows x86-64, latest MinGW GCC
@@ -73,7 +69,7 @@ Branch Support Status
 -------------------------
 
 Following table provides the support status for Botan branches, as of
-January 2025.
+August 2025.
 
 "Active development" refers to adding new features and optimizations. At the
 conclusion of the active development phase, only bugfixes are applied.
@@ -84,8 +80,8 @@ End of life dates may be extended as circumstances warrant.
 Branch         First Release  End of Active Development  End of Life
 ============== ============== ========================== ============
 Botan2         2017-01-06     2020-11-05                 2024-12-31
-Botan3         2023-04-11     2027                       2028-12-31 or later
-Botan4         2027           ?                          ?
+Botan3         2023-04-11     2027?                      2028-12-31 or later
+Botan4         2027?          ?                          ?
 ============== ============== ========================== ============
 
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