[branch-49] Update version to 49.0.0, add changelog (apache#16822)

* Update version to 49.0.0

* Add 49.0.0 changelog

* prettier

* Update changelog and config
# Conflicts:
#	Cargo.lock
#	Cargo.toml
#	dev/changelog/49.0.0.md
#	docs/source/user-guide/configs.md

Author: alamb

dev/changelog/49.0.0.md

@@ -265,6 +265,7 @@ See the [upgrade guide](https://datafusion.apache.org/library-user-guide/upgradi
 - chore(devcontainer): use debian's `protobuf-compiler` package [#16687](https://github.com/apache/datafusion/pull/16687) (fvj)
 - Add link to upgrade guide in changelog script [#16680](https://github.com/apache/datafusion/pull/16680) (alamb)
 - Improve display format of BoundedWindowAggExec [#16645](https://github.com/apache/datafusion/pull/16645) (geetanshjuneja)
+- Bump the MSRV due to transitive dependencies [#16728](https://github.com/apache/datafusion/pull/16728) (rtyler)
 - Fix: optimize projections for unnest logical plan. [#16632](https://github.com/apache/datafusion/pull/16632) (bert-beyondloops)
 - Use the `test-threads` option in sqllogictests [#16722](https://github.com/apache/datafusion/pull/16722) (mjgarton)
 - chore(deps): bump clap from 4.5.40 to 4.5.41 [#16735](https://github.com/apache/datafusion/pull/16735) (dependabot[bot])
@@ -323,6 +324,7 @@ Thank you to everyone who contributed to this release. Here is a breakdown of co
      6	Oleks V
      6	Pepijn Van Eeckhoudt
      6	xudong.w
+     5	Oleks V
      5	Yongting You
      5	ding-young
      4	Simon Vandel Sillesen