Introduce envsubst for config.js, update deps (#3032)

This is the implemenation of envsubst discussed in #1756 

Documentation update will follow after merge.

package.json

@@ -51,15 +51,15 @@
 	"devDependencies": {
 		"eslint-config-prettier": "^8.6.0",
 		"eslint-plugin-jest": "^27.2.1",
-		"eslint-plugin-jsdoc": "^39.6.8",
+		"eslint-plugin-jsdoc": "^39.8.0",
 		"eslint-plugin-prettier": "^4.2.1",
 		"express-basic-auth": "^1.2.1",
 		"husky": "^8.0.3",
-		"jest": "^29.4.0",
+		"jest": "^29.4.2",
 		"jsdom": "^21.1.0",
 		"lodash": "^4.17.21",
 		"playwright": "^1.30.0",
-		"prettier": "^2.8.3",
+		"prettier": "^2.8.4",
 		"pretty-quick": "^3.1.3",
 		"sinon": "^15.0.1",
 		"stylelint": "^14.16.1",
@@ -69,24 +69,25 @@
 		"suncalc": "^1.9.0"
 	},
 	"optionalDependencies": {
-		"electron": "^22.1.0"
+		"electron": "^22.2.0"
 	},
 	"dependencies": {
 		"colors": "^1.4.0",
 		"console-stamp": "^3.1.0",
 		"digest-fetch": "^2.0.1",
-		"eslint": "^8.32.0",
+		"envsub": "^4.1.0",
+		"eslint": "^8.33.0",
 		"express": "^4.18.2",
 		"express-ipfilter": "^1.3.1",
 		"feedme": "^2.0.2",
 		"helmet": "^6.0.1",
 		"iconv-lite": "^0.6.3",
-		"luxon": "^1.28.0",
+		"luxon": "^1.28.1",
 		"module-alias": "^2.2.2",
 		"moment": "^2.29.4",
-		"node-fetch": "^2.6.7",
+		"node-fetch": "^2.6.9",
 		"node-ical": "^0.15.3",
-		"socket.io": "^4.5.4"
+		"socket.io": "^4.6.0"
 	},
 	"_moduleAliases": {
 		"node_helper": "js/node_helper.js",