doc: add 23.2 release notes

doc/release-notes/release-notes-23.2.md

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+23.2 Release Notes
+==================
+
+Bitcoin Core version 23.2 is now available from:
+
+  <https://bitcoincore.org/bin/bitcoin-core-23.2/>
+
+This release includes various bug fixes and performance
+improvements, as well as updated translations.
+
+Please report bugs using the issue tracker at GitHub:
+
+  <https://github.com/bitcoin/bitcoin/issues>
+
+To receive security and update notifications, please subscribe to:
+
+  <https://bitcoincore.org/en/list/announcements/join/>
+
+How to Upgrade
+==============
+
+If you are running an older version, shut it down. Wait until it has completely
+shut down (which might take a few minutes in some cases), then run the
+installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on macOS)
+or `bitcoind`/`bitcoin-qt` (on Linux).
+
+Upgrading directly from a version of Bitcoin Core that has reached its EOL is
+possible, but it might take some time if the data directory needs to be migrated. Old
+wallet versions of Bitcoin Core are generally supported.
+
+Compatibility
+==============
+
+Bitcoin Core is supported and extensively tested on operating systems
+using the Linux kernel, macOS 10.15+, and Windows 7 and newer.  Bitcoin
+Core should also work on most other Unix-like systems but is not as
+frequently tested on them.  It is not recommended to use Bitcoin Core on
+unsupported systems.
+
+### P2P
+
+- #26909 net: prevent peers.dat corruptions by only serializing once
+- #27608 p2p: Avoid prematurely clearing download state for other peers
+- #27610 Improve performance of p2p inv to send queues
+
+### Build system
+
+- #25436 build: suppress array-bounds errors in libxkbcommon
+- #25763 bdb: disable Werror for format-security
+- #26944 depends: fix systemtap download URL
+- #27462 depends: fix compiling bdb with clang-16 on aarch64
+
+### Miscellaneous
+
+- #25444 ci: macOS task imrovements
+- #26388 ci: Use macos-ventura-xcode:14.1 image for "macOS native" task
+- #26924 refactor: Add missing includes to fix gcc-13 compile error
+
+Credits
+=======
+
+Thanks to everyone who directly contributed to this release:
+
+- Anthony Towns
+- Hennadii Stepanov
+- MacroFake
+- Martin Zumsande
+- Michael Ford
+- Suhas Daftuar
+
+As well as to everyone that helped with translations on
+[Transifex](https://www.transifex.com/bitcoin/bitcoin/).