Fix secrets usage

[gentlementlegen]

          @0x4007 I should have tested this, but it will always crash if a user opens a pull request because it uses variables from secrets that are not accessible, I will fix that.

Originally posted by @gentlementlegen in #31 (comment)

Many variables of the script reference secrets, which do not exist on PRs for security reasons. They have to be replaced or default to something for graceful fallback.

[ubiquity-os]

! No price label is set to calculate the duration

[ubiquity-os]

! No price label is set to calculate the duration

[ubiquity-os]

@gentlementlegen the deadline is at Fri, Nov 8, 9:08 AM UTC

[0x4007]

! No price label is set to calculate the duration

This error doesn't make sense it should be removed.

[ubiquity-os]

 [ 17.76 WXDAI ] 

@gentlementlegen

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@0x4007 I should have tested this, but it will always crash if a…	3.92 content: content: p: score: 0 elementCount: 3 em: score: 0 elementCount: 1 result: 0 regex: wordCount: 75 wordValue: 0.1 result: 3.92	1	11.76
Resolves #75QA: https://github.com/ubiquity-os/plugin-sdk/acti…	0 content: content: p: score: 0 elementCount: 2 result: 0 regex: wordCount: 17 wordValue: 0 result: 0	0.2	0

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@0x4007

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This error doesn't make sense it should be removed.	0.71 content: content: p: score: 0 elementCount: 1 result: 0 regex: wordCount: 10 wordValue: 0.1 result: 0.71	0.6	0.426