main/postmarketos-ui-sxmo-*: bump conky version in dependencies

This fixes a dependency issue:

ERROR: unable to select packages:
  conky-1.21.9-r0:
    breaks: postmarketos-ui-sxmo-de-sway-1.17.1-r0[conky<=1.20.1-r0]
    satisfies: sxmo-utils-common-1.17.1-r0[conky]

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ack

I just saw !5878 (merged) which also fixes the issue, so I will close this and merge that other MR instead.

closed