Update data export/import scripts to use latest Salesforce CLI commands

- Updated sf-data-export to use 'sf data export bulk' instead of deprecated 'sf data export'
- Updated sf-data-export.ps1 to use 'sf data export bulk' command structure
- Updated sf-data-import to use 'sf data import bulk' for better compatibility
- All scripts now comply with the latest Salesforce CLI command structure
- Fixes compatibility issues with newer SF CLI versions

sf-data-import

@@ -289,12 +289,27 @@ if [[ "$VERBOSE" == true ]]; then
     show_file_preview "$FILE" "$FILE_FORMAT"
 fi
 
-# Build the sf command
-SF_ARGS=("data" "$OPERATION")
-
-# Add the file and sobject
-SF_ARGS+=("--file" "$FILE")
-SF_ARGS+=("--sobject" "$SOBJECT")
+# Build the sf command - SF CLI now uses specific commands for different operations
+case "$OPERATION" in
+    "insert")
+        # For insert operations, use bulk import (works for all data types)
+        SF_ARGS=("data" "import" "bulk")
+        SF_ARGS+=("--file" "$FILE")
+        SF_ARGS+=("--sobject" "$SOBJECT")
+        ;;
+    "update")
+        # For update operations, use bulk update
+        SF_ARGS=("data" "update" "bulk")
+        SF_ARGS+=("--file" "$FILE")
+        SF_ARGS+=("--sobject" "$SOBJECT")
+        ;;
+    "upsert")
+        # For upsert operations, use bulk upsert
+        SF_ARGS=("data" "upsert" "bulk")
+        SF_ARGS+=("--file" "$FILE")
+        SF_ARGS+=("--sobject" "$SOBJECT")
+        ;;
+esac
 
 # Add optional parameters
 if [[ -n "$TARGET_ORG" ]]; then