Update build-release.sh

force correct dir

tools/build-release.sh

@@ -332,6 +332,7 @@ pkgJsonDev=$releaseDir/$PACKAGE_JSON_DEV
 echo " - generating/merging _DEV_ JSON file (${pkgJsonDev})..."
 
 cat $srcdir/package/package_esp32_index.template.json | jq "$jq_arg" > $pkgJsonDev
+cd $srcdir
 if [ ! -z "$prev_any_release" ] && [ "$prev_any_release" != "null" ]; then
 	downloadAndMergePackageJSON "https://github.com/$TRAVIS_REPO_SLUG/releases/download/${prev_any_release}/${PACKAGE_JSON_DEV}" "${pkgJsonDev}" "${curlAuth}" "$releaseDir"