Update TorBrowserTailsRoadmap.png image

Since the fix for #11000 (closed), the pidgin feature fails at the “Then the Tor Browser has started and loaded the Tails roadmap” step. The TorBrowserTailsRoadmap.png file hasn’t been updated while fixing #11097 (closed) and it seems the font being different causes this error.

Related issues

Related to #11000 (closed)
Related to #11097 (closed)

Original created by @bertagaz on 11124 (Redmine)

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