update aiida-gpcr-workshop version to 2026-01-26

Author: jimboid

workshop.json

@@ -28,7 +28,7 @@
       "latest": "2026-01-26"
     },
     "aiida-gpcr-workshop": {
-      "latest": "2026-01-19"
+      "latest": "2026-01-26"
     },
     "pca-workshop": {
       "latest": "2026-01-26"