Update dependency i18next to v25

Author: renovate[bot]

packages/datagateway-common/package.json

@@ -22,7 +22,7 @@
     "date-fns": "2.30.0",
     "hex-to-rgba": "2.0.1",
     "history": "4.10.1",
-    "i18next": "22.0.3",
+    "i18next": "25.6.2",
     "lodash.debounce": "4.0.8",
     "loglevel": "1.9.1",
     "prettier": "2.8.0",

packages/datagateway-dataview/package.json

@@ -30,7 +30,7 @@
     "eslint-plugin-cypress": "2.15.1",
     "eslint-plugin-prettier": "4.2.1",
     "history": "4.10.1",
-    "i18next": "22.0.3",
+    "i18next": "25.6.2",
     "i18next-browser-languagedetector": "8.2.0",
     "i18next-http-backend": "3.0.2",
     "jsrsasign": "11.1.0",

packages/datagateway-download/package.json

@@ -29,7 +29,7 @@
     "eslint-plugin-prettier": "4.2.1",
     "fastq": "^1.19.1",
     "history": "4.10.1",
-    "i18next": "22.0.3",
+    "i18next": "25.6.2",
     "i18next-browser-languagedetector": "8.2.0",
     "i18next-http-backend": "3.0.2",
     "jsrsasign": "11.1.0",

packages/datagateway-search/package.json

@@ -31,7 +31,7 @@
     "eslint-plugin-cypress": "2.15.1",
     "eslint-plugin-prettier": "4.2.1",
     "history": "4.10.1",
-    "i18next": "22.0.3",
+    "i18next": "25.6.2",
     "i18next-browser-languagedetector": "8.2.0",
     "i18next-http-backend": "3.0.2",
     "jsrsasign": "11.1.0",