Updated run.sh to only use the sh shell

run.sh

@@ -1,4 +1,4 @@
-#! /usr/bin/env bash
+#! /usr/bin/env sh
 
 # Dynamic Cloudflare DNS, a way to automate DNS changes for Cloudflare
 # Copyright (C) 2022 Anon <@Anon@yandere.cc>
@@ -31,7 +31,7 @@ ENTRY='./src/main.py'
 # cd into the bot's root path, set up the virtual environment, and run
 cd "$RUN_DIR"
 [ ! -f "$VENV" ] && echo "Virtual environment not found: ${VENV}" && cd - > /dev/null && exit 1
-source "$VENV"
+. "$VENV"
 "$ENTRY" "$@"
 
 # Cleanup