English has enormous variation in pronunciation, but I think (drawing from knowledge of German, more than of English) it’s more like “oer” in “boer” (/bʊər/ , https://en.wikipedia.org/wiki/Boer), with a somewhat shortened “oe”.
The font I'm seeing in the mono is not making this obvious: The US version has a hook on the right side. It might show up better in proportional font. /ɝ/ That hook is indicating that the vowel is rhotic aka "r-colored".
In UK, it's like tour or fur.
Just for the sake of non-native speakers like me... My first idea was "your-technical debt" :)
Edit source: https://en.wiktionary.org/wiki/ur-