[BUGFIX] Provide the authentication token for PHIVE on CI (#1340)

This will hopefully avoid the 403 errors when installing the
PHIVE packages.

Fixes #1339

Author: oliverklee

.github/workflows/ci.yml

@@ -139,6 +139,8 @@ jobs:
                   composer show;
 
             - name: Install development tools
+              env:
+                  GITHUB_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
               run: |
                   phive --no-progress install --trust-gpg-keys 0FDE18AE1D09E19F60F6B1CBC00543248C87FB13,BBAB5DF0A0D6672989CF1869E82B2FB314E9906E