feat: allow linuxstatic builds for ppc64 architecture (#118)

## Summary
Allow linuxstatic platform builds for ppc64 architecture by bypassing
the platform validation check.

## Changes
- Modified the platform validation logic in `lib/index.ts` to skip the
platform mismatch check when building for ppc64 architecture
- Added `&& arch !== 'ppc64'` condition to allow linuxstatic builds on
ppc64 without validation errors


## Impact
- Users can now build linuxstatic binaries for ppc64 architecture
without platform validation blocking the process
- No breaking changes to existing functionality
- Maintains existing platform validation for other architectures except
ppc64

## Use Case
This enables building static Linux binaries on ppc64 systems, which is
particularly useful for PowerPC environments that need statically linked
executables.

---------

Co-authored-by: Daniel Lando <daniel.sorridi@gmail.com>

lib/index.ts

@@ -173,7 +173,7 @@ export async function need(opts: NeedOptions) {
   }
 
   if (hostPlatform !== platform) {
-    if (hostPlatform !== 'alpine' || platform !== 'linuxstatic') {
+    if ((hostPlatform !== 'alpine' || platform !== 'linuxstatic') && arch !== 'ppc64') {
       throw wasReported(
         `Not able to build for '${opts.platform}' here, only for '${hostPlatform}'`
       );