fix: Call generate-variants on noir-projects bootstrap fast (#8956)

Running bootstrap fast on a clean repo would fail to generate the
`private-kernel-reset-dimensions.json` file which was required during
the generate step of `yarn-project`.

noir-projects/bootstrap_cache.sh

@@ -13,4 +13,5 @@ remove_old_images noir-projects
 
 yarn
 
-./mock-protocol-circuits/bootstrap.sh
+./mock-protocol-circuits/bootstrap.sh
+(cd ./noir-protocol-circuits && yarn && node ./scripts/generate_variants.js)