Make bash scripts exit on error rather than continue (#23467)

scripts/get-version-from-git.sh

@@ -3,6 +3,8 @@
 # Echoes a version based on the git hashes of the element-web, react-sdk & js-sdk checkouts, for the case where
 # these dependencies are git checkouts.
 
+set -e
+
 # Since the deps are fetched from git, we can rev-parse
 REACT_SHA=$(git -C node_modules/matrix-react-sdk rev-parse --short=12 HEAD)
 JSSDK_SHA=$(git -C node_modules/matrix-js-sdk rev-parse --short=12 HEAD)