Auto merge of #14400 - akonradi:patch-1, r=epage

Fix MSRV for workspace .package and .dependencies

The feature was stabilized in 1.64.0

### What does this PR try to resolve?

Fixes a bug in the documentation.

### How should we test and review this PR?

The [release notes for 1.64.0](https://github.com/rust-lang/rust/releases/tag/1.64.0) list the features as stabilized.

### Additional information

This fixes a mismatch between this documentation and the note at the top of [the RFC](https://github.com/rust-lang/rfcs/blob/46781d0b1de3a07b10c2066d371ba7de2e209f15/text/2906-cargo-workspace-deduplicate.md).

Author: bors

src/doc/src/reference/workspaces.md

@@ -191,7 +191,7 @@ description.workspace = true
 documentation.workspace = true
 ```
 
-> **MSRV:** Requires 1.74+
+> **MSRV:** Requires 1.64+
 
 ## The `dependencies` table
 
@@ -232,7 +232,7 @@ cc.workspace = true
 rand.workspace = true
 ```
 
-> **MSRV:** Requires 1.74+
+> **MSRV:** Requires 1.64+
 
 ## The `lints` table