Fix caching on Linux and MacOS (#6270)

When bumping the cache url on Windows, I accidentally also changed the
URL we push to on Linux and MacOS. This is obviously a bad idea so
this PR fixes it.

changelog_begin
changelog_end

ci/configure-bazel.sh

@@ -48,7 +48,10 @@ if [ ! -z "${BAZEL_CONFIG_DIR:-}" ]; then
     cd "$BAZEL_CONFIG_DIR"
 fi
 
+CACHE_URL="https://storage.googleapis.com/daml-bazel-cache"
+
 if is_windows; then
+  CACHE_URL="$CACHE_URL/v1"
   echo "build --config windows" > .bazelrc.local
   echo "build --config windows-ci" >> .bazelrc.local
 
@@ -81,5 +84,5 @@ if [[ "${IS_FORK}" = False ]]; then
   echo "$GOOGLE_APPLICATION_CREDENTIALS_CONTENT" > "$GOOGLE_APPLICATION_CREDENTIALS"
   unset GOOGLE_APPLICATION_CREDENTIALS_CONTENT
   export GOOGLE_APPLICATION_CREDENTIALS
-  echo "build --remote_http_cache=https://storage.googleapis.com/daml-bazel-cache/v1 --remote_upload_local_results=true --google_credentials=${GOOGLE_APPLICATION_CREDENTIALS}" >> .bazelrc.local
+  echo "build --remote_http_cache=$CACHE_URL --remote_upload_local_results=true --google_credentials=${GOOGLE_APPLICATION_CREDENTIALS}" >> .bazelrc.local
 fi