fix(cogify): use datetime to be consistent with STAC (#2832)

Author: blacha

packages/cogify/src/cogify/stac.ts

@@ -60,7 +60,7 @@ export type CogifyStacItem = StacItem & {
       /** Git commit hash that the file was generated with */
       hash: string;
       /** ISO date of the time this file was generated */
-      date: string;
+      datetime: string;
       /** version of GDAL used to create the COG */
       gdal?: string;
     };

packages/cogify/src/tile.cover.ts

@@ -150,7 +150,7 @@ export async function createTileCover(ctx: TileCoverContext): Promise<TileCoverR
           package: CliInfo.package,
           hash: CliInfo.hash,
           version: CliInfo.version,
-          date: cliDate,
+          datetime: cliDate,
         },
       },
       assets: {},