Update Rust crate indexmap to v2.6.0 (#7956)

Cargo.lock

@@ -859,7 +859,7 @@ checksum = "5041cc499144891f3790297212f32a74fb938e5136a14943f338ef9e0ae276cf"
 dependencies = [
  "cfg-if",
  "crossbeam-utils",
- "hashbrown",
+ "hashbrown 0.14.5",
  "lock_api",
  "once_cell",
  "parking_lot_core 0.9.10",
@@ -1370,6 +1370,12 @@ version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
 
+[[package]]
+name = "hashbrown"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e087f84d4f86bf4b218b927129862374b72199ae7d8657835f1e89000eea4fb"
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -1580,12 +1586,12 @@ checksum = "b72ad49b554c1728b1e83254a1b1565aea4161e28dabbfa171fc15fe62299caf"
 
 [[package]]
 name = "indexmap"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68b900aa2f7301e21c36462b170ee99994de34dff39a4a6a528e80e7376d07e5"
+checksum = "707907fe3c25f5424cce2cb7e1cbcafee6bdbe735ca90ef77c29e84591e5b9da"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.15.0",
  "serde",
 ]
 
@@ -2893,7 +2899,7 @@ checksum = "395027076c569819ea6035ee62e664f5e03d74e281744f55261dd1afd939212b"
 dependencies = [
  "bytecheck",
  "bytes",
- "hashbrown",
+ "hashbrown 0.14.5",
  "indexmap",
  "munge",
  "ptr_meta",