ci: Fix release name of macos binary

This is built on macos-14, which is running on new arm based hardware,
not the old x86_64 ones.

.github/workflows/build.yaml

@@ -101,7 +101,7 @@ jobs:
               ~/.stack/pantry
               ~/.stack/snapshots
               ~/.stack/stack.sqlite3
-            artifact: postgrest-macos-x64
+            artifact: postgrest-macos-aarch64
             deps: brew install libpq && brew link --force libpq
 
           - name: Windows

.github/workflows/ci.yaml

@@ -213,8 +213,8 @@ jobs:
           tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-linux-static-x64.tar.xz" \
             -C artifacts/postgrest-linux-static-x64 postgrest
 
-          tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-macos-x64.tar.xz" \
-            -C artifacts/postgrest-macos-x64 postgrest
+          tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-macos-aarch64.tar.xz" \
+            -C artifacts/postgrest-macos-aarch64 postgrest
 
           tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-freebsd-x64.tar.xz" \
             -C artifacts/postgrest-freebsd-x64 postgrest