changelog: cleanup 3.0.0-alpha3 changelogs

Remove issues released in 2.11.1 from master (3.0.0-alpha3)

NO_CHANGELOG=changelog
NO_DOC=changelog
NO_TEST=changelog

changelogs/unreleased/add-fiber-stack-size-option-to-cmake.md

-## feature/build
-
-* Added the CMake option `FIBER_STACK_SIZE` to set the default fiber stack size.

changelogs/unreleased/gh-4544-segfault-if-i-delete-a-collation.md

-## bugfix/core
-
-* Fixed a crash when a collation used by a space was deleted (gh-4544).

changelogs/unreleased/gh-4632-net-box-unknown-field-type.md

-## bugfix/core
-
-* Fixed a crash in the `net.box` client when a remote space had
-  a field type that the client version did not support (gh-4632).

changelogs/unreleased/gh-5616-temp-space-truncate-ro.md

-## feature/box
-
-* Allowed truncation of temporary and local spaces in the read-only mode
-  (gh-5616).

changelogs/unreleased/gh-6119-fix-number-mp-encode.md

-## bugfix/box
-
-* Fixed a bug when large numbers were encoded incorrectly by `msgpackffi`.
-  It could lead to wrong select results with large number keys (gh-6119).

changelogs/unreleased/gh-6128-fix-crash-with-background-env-option.md

-## bugfix/core
-
-* Fixed a crash that could happen when Tarantool is started in the
-  [background mode](https://www.tarantool.io/en/doc/latest/reference/configuration/#confval-background)
-  (gh-6128).

changelogs/unreleased/gh-6668-ordering-incomparable-types.md

-## bugfix/sql
-
-* Now the `ARRAY`, `MAP`, and `INTERVAL` values cannot be used as
-  arguments in the `ORDER BY` clause (gh-6668).

changelogs/unreleased/gh-7294-long-reconnection-fix.md

-## bugfix/replication
-
-* Fixed a bug related to `box.info.replication[...].upstream` being stuck in the "connecting"
-  state for several minutes after a replica DNS record change (gh-7294).

changelogs/unreleased/gh-7311-malloc-info.md

-## feature/core
-
-* Added the new function `box.malloc.info()` for reporting memory usage of
-  Tarantool internal data structures allocated with `malloc()`. The function
-  is available only on Linux (gh-7311).

changelogs/unreleased/gh-7389-memtx_memory-check.md

-## bugfix/memtx
-
-* Fixed the ability for the `memtx_memory` parameter to specify a memory size
-  less than required for the stable operation of the engine (gh-7389).

changelogs/unreleased/gh-7483-ignore-mpack-types.md

-## bugfix/box
-
-* Fixed the inability to insert an integral number into a double-formatted
-  field (gh-7483).

changelogs/unreleased/gh-7515-syncing-follower-notices-leader-hang.md

-## bugfix/replication
-
-* Fixed an issue when the nodes synchronizing with
-  a hung leader reported the leader as alive.
-  This behavior led to the delay of the new elections (gh-7515).

changelogs/unreleased/gh-7536-enable-hardening-on-AArch64.md

-## feature/build
-
-* Hardening against memory corruption attacks is now enabled by default on
-  AArch64 systems (gh-7536).

changelogs/unreleased/gh-7536-enable-hardening-on-FreeBSD.md

-## feature/build
-
-* Hardening against memory corruption attacks is now enabled by default on
-  FreeBSD (gh-7536).

changelogs/unreleased/gh-7725-embed-metrics.md

-## feature/lua
-
-* Embedded the `tarantool/metrics` module for metrics aggregation and export (gh-7725).
-* Metrics can now be configured using the `box.cfg()` function (gh-7725).

changelogs/unreleased/gh-7873-func-priv-check.md

-## bugfix/box
-
-* Fixed the privilege check when using spaces with functional indexes and
-  constraints (gh-7873).

changelogs/unreleased/gh-7932-recovery-mixed-transactions.md

-## feature/replication
-
-* Implemented correct recovery of mixed transactions. To do this, set
-  `box.cfg.force_recovery` to `true`. If you need to revert to the old
-  behavior, don't set the `force_recovery` option (gh-7932).

changelogs/unreleased/gh-7939-fix-misc-memory-leaks-on-tuple-encoding-failure.md

-## bugfix/box
-
-* Fixed several memory leaks on tuple encoding failures (gh-7939).

changelogs/unreleased/gh-7974-force-recovery-without-user-spaces.md

-## bugfix/box
-
-* Fixed a bug where `box.cfg.force_recovery` doesn't work when there are
-  no user spaces in a snapshot (gh-7974).

changelogs/unreleased/gh-7991-relay-crash.md

-## bugfix/replication
-
-* Fixed a crash when using transactions with the linearizable isolation level during
-  a replica reconnect (gh-7991).