docs: update for new year (#1215)

fix: make footer year dynamic; manually update `license.mdx` year; fix `Datepicker` manual year tests

Co-authored-by: SutuSebastian <sebastian.sutu@stainless-code.com>

app/docs/[[...slug]]/page.tsx

@@ -238,7 +238,7 @@ function DocFooter() {
           <Footer.Copyright
             by="All Rights Reserved. Flowbite™ is a registered trademark."
             href="/"
-            year={2023}
+            year={new Date().getFullYear()}
             className="text-base"
           />
         </div>

components/homepage/main-footer.tsx

@@ -91,7 +91,7 @@ export const MainFooter: FC = () => {
           <Footer.Copyright
             by="All Rights Reserved. Flowbite™ is a registered trademark."
             href="/"
-            year={2023}
+            year={new Date().getFullYear()}
             className="text-base"
           />
         </div>

content/docs/getting-started/license.mdx

@@ -5,7 +5,7 @@ description: Learn more about the open-source licensing rights of the Flowbite R
 
 ## MIT License
 
-Copyright © 2023 Bergside Inc.
+Copyright © 2024 Bergside Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

src/components/Datepicker/helpers.spec.tsx

@@ -134,20 +134,20 @@ describe('addYears', () => {
   it('returns a new date by adding the specified number of years', () => {
     const date = new Date(2023, 0, 1); // January 1st, 2023
     const newDate = addYears(date, 5);
-    expect(newDate.getFullYear()).toBe(2028);
+    expect(newDate.getFullYear()).toBe(date.getFullYear() + 5);
   });
 
   it('returns a new date by subtracting the specified number of years', () => {
     const date = new Date(2023, 0, 1); // January 1st, 2023
     const newDate = addYears(date, -2);
-    expect(newDate.getFullYear()).toBe(2021);
+    expect(newDate.getFullYear()).toBe(date.getFullYear() - 2);
   });
 
   it('does not modify the original date', () => {
     const date = new Date(2023, 0, 1); // January 1st, 2023
     const newDate = addYears(date, 5);
     expect(date.getFullYear()).toBe(2023);
-    expect(newDate.getFullYear()).toBe(2028);
+    expect(newDate.getFullYear()).toBe(date.getFullYear() + 5);
   });
 });