x11/workrave: Update to 1.10.50

Changelogs since last update:

• https://github.com/rcaelers/workrave/releases/tag/v1_10_45
• https://github.com/rcaelers/workrave/releases/tag/v1_10_47
• https://github.com/rcaelers/workrave/releases/tag/v1_10_48
• https://github.com/rcaelers/workrave/releases/tag/v1_10_49
• https://github.com/rcaelers/workrave/releases/tag/v1_10_50

PR: 268027
Reported by: cyberbotx@cyberbotx.com (maintainer)