Bump query-exporter from `f394f39` to `ff993ff`

Bumps query-exporter from f394f39 to ff993ff.

Commits

• ff993ff chore: move example sql files
• 01b439f chore: split queries to separate files for examples
• d1647cb feat: run queries in explicit transactions, deprecate autocommit flag (#232)
• 30421c5 chore: fix url
• e003f36 feat: add query interval metric (fixes #225) (#230)
• 9ae1cf7 chore: add discussions to the doc
• c092fbe Bump structlog from 24.4.0 to 25.1.0 in the major group (#228)
• 018fb18 chore: refactory Query adding QueryExecution (#229)
• c5880c2 Bump referencing from 0.35.1 to 0.36.1 in the minor group (#227)
• 9602756 chore: add contribution guidelines (#226)
• Additional commits viewable in compare view

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