chore: upgrade to L9

BREAKING CHANGE: This commit updates the Laravel framework to version 9. Additionally, it also updates outdated and abandoned dependencies in the composer.json file.

The resources/lang directory has also been moved to the repository's root directory.

lang/vendor/log-viewer/et.json

@@ -0,0 +1,13 @@
+{
+    "Date": "Kuupäev",
+    "The list of logs is empty!": "Logide nimekiri on tühi!",
+    "All": "Kõik",
+    "Emergency": "Erakorraline",
+    "Alert": "Häire",
+    "Critical": "Kriitiline",
+    "Error": "Viga",
+    "Warning": "Hoiatus",
+    "Notice": "Teade",
+    "Info": "Info",
+    "Debug": "Silumine"
+}