fix install-deps

Author: blink1073

.evergreen/install-dependencies.sh

@@ -4,7 +4,7 @@ set -eu
 # Install just.
 # On Evergreen jobs, "CI" will be set, and we don't want to write to $HOME.
 if [ "${CI:-}" == "true" ]; then
-  BIN_DIR=$DRIVERS_TOOLS_BINARIES
+  BIN_DIR=${DRIVERS_TOOLS_BINARIES:-}
 else
   BIN_DIR=$HOME/.local/bin
 fi

.evergreen/scripts/setup-dev-env.sh

@@ -17,7 +17,7 @@ else
   BIN_DIR=.venv/bin
 fi
 
-. $HERE/install-dependencies.sh
+. $HERE/../install-dependencies.sh
 
 # Ensure there is a python venv.
 if [ ! -d $BIN_DIR ]; then