[branch-51] Update changelog for 51.0.0 RC2 (#18705)

## Which issue does this PR close?

- part of
#17558 (comment)

## Rationale for this change

Per @xudong963
#17558 (comment)
we have backported stuff into the 51 branch, so we also need to update
the changelog

## What changes are included in this PR?


Ran
```shell
./dev/release/generate-changelog.py 50.3.0 branch-51 51.0.0 > dev/changelog/51.0.0.md
npx prettier@2.7.1 --write             '{datafusion,datafusion-cli,datafusion-examples,dev,docs}/**/*.md'             '!datafusion/CHANGELOG.md'             README.md             CONTRIBUTING.md
```

And checked in the result

## Are these changes tested?

By CI
## Are there any user-facing changes?

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Author: alamb

dev/changelog/51.0.0.md

@@ -19,7 +19,7 @@ under the License.
 
 # Apache DataFusion 51.0.0 Changelog
 
-This release consists of 533 commits from 128 contributors. See credits at the end of this changelog for more information.
+This release consists of 537 commits from 129 contributors. See credits at the end of this changelog for more information.
 
 See the [upgrade guide](https://datafusion.apache.org/library-user-guide/upgrading.html) for information on how to upgrade from previous versions.
 
@@ -573,6 +573,10 @@ See the [upgrade guide](https://datafusion.apache.org/library-user-guide/upgradi
 - Add comments to Cargo.toml about workspace overrides [#18526](https://github.com/apache/datafusion/pull/18526) (alamb)
 - minor: Remove inconsistent comment [#18539](https://github.com/apache/datafusion/pull/18539) (2010YOUY01)
 - Refactor `log()` signature to use coercion API + fixes [#18519](https://github.com/apache/datafusion/pull/18519) (Jefffrey)
+- [branch-51] Update Changelog [#18592](https://github.com/apache/datafusion/pull/18592) (alamb)
+- [branch-51] bugfix: correct regression on TableType in into_view in DF51 [#18618](https://github.com/apache/datafusion/pull/18618) (timsaucer)
+- [branch-51]: Add timezone to date_trunc fast path (#18596) [#18629](https://github.com/apache/datafusion/pull/18629) (hareshkh)
+- [branch-51] bugfix: select_columns should validate column names [#18624](https://github.com/apache/datafusion/pull/18624) (timsaucer)
 
 ## Credits
 
@@ -581,7 +585,7 @@ Thank you to everyone who contributed to this release. Here is a breakdown of co
 ```
     88	dependabot[bot]
     49	Jeffrey Vo
-    34	Andrew Lamb
+    35	Andrew Lamb
     20	Yongting You
     19	Adrian Garcia Badaracco
     14	Blake Orth
@@ -599,10 +603,10 @@ Thank you to everyone who contributed to this release. Here is a breakdown of co
      8	Raz Luvaton
      7	Adam Gutglick
      7	Rohan Krishnaswamy
+     7	Tim Saucer
      7	kosiew
      6	xudong.w
      5	Nuno Faria
-     5	Tim Saucer
      4	Dhanush
      4	Samuele Resca
      4	Simon Vandel Sillesen
@@ -661,6 +665,7 @@ Thank you to everyone who contributed to this release. Here is a breakdown of co
      1	Gabriel
      1	Gene Bordegaray
      1	Georgi Krastev
+     1	Haresh Khanna
      1	Heran Lin
      1	Hiroaki Yutani
      1	Ian Lai