[REL] 17.0.21

### Contains the following commits:

cefa5596c [PERF] helpers: reduce toZone memory allocation Task: 3915798
e8d14442c [FIX] Export xlsx: export value for non-exportable formulas Task: 3895465
6eb43533d [FIX] chart: avoid useless chart updates Task: 3697660
5cc411f10 [FIX] chart: wrong line dot size Task: 3697660
60f9fddc5 [FIX] data_validation: prevent icon overlap Task: 3684182
68ce80857 [MOV] filter_icon_overlay: move tests to correct folder Task: 3684182
1f97287d3 [FIX] charts: time axis broken with long formatted date Task: 3857242

closes #4178

Signed-off-by: Rémi Rahir (rar) <rar@odoo.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@odoo/o-spreadsheet",
-  "version": "17.0.20",
+  "version": "17.0.21",
   "description": "A spreadsheet component",
   "type": "module",
   "main": "dist/o-spreadsheet.cjs.js",