bug: Fix version number and changelog (#1293)

## Description:

Fix missing version number and changelog in branch deploys.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

build.sh

@@ -74,8 +74,12 @@ echo "Metadata file: $METADATA_FILE"
 GIT_COMMIT=$(git rev-parse HEAD 2> /dev/null || echo "unknown")
 echo "Git commit: $GIT_COMMIT"
 
-echo "$CHANGELOG_MD" > resources/changelog.md
-echo "$VERSION_TXT" > resources/version.txt
+if [ -n "$CHANGELOG_MD" ]; then
+    echo "$CHANGELOG_MD" > resources/changelog.md
+fi
+if [ -n "$VERSION_TXT" ]; then
+    echo "$VERSION_TXT" > resources/version.txt
+fi
 
 docker buildx build \
     --platform linux/amd64 \