When testing rpms on rocky, swap to using the main rocky repos (#20191)

* When testing rpms on rocky, swap to using the main rocky repos hosted by fastly

* Remove rocky-builder, since we're already testing on both rocky8 and rocky9 (which the builder is based on)

Author: cmmarslender

.github/workflows/build-linux-installer-rpm.yml

@@ -285,9 +285,6 @@ jobs:
             # bypass this error for now: Problem: The operation would result in removing the following protected packages: systemd-udev
             noautoremove:
               gui: --noautoremove
-          - name: build image
-            type: rocky
-            url: "docker://chianetwork/rocky8-builder:latest"
         mode:
           - name: GUI
             matrix: gui
@@ -306,6 +303,16 @@ jobs:
     steps:
       - uses: Chia-Network/actions/clean-workspace@main
 
+      - name: Set rocky8 repo
+        if: ${{ matrix.distribution.name == 'rockylinux:8' }}
+        run: |
+          sed -i -e 's|^mirrorlist=|#mirrorlist=|' -e 's|^#baseurl=http://dl\.rockylinux\.org/|baseurl=https://dl.rockylinux.org/|' /etc/yum.repos.d/Rocky-*.repo
+
+      - name: Set rocky9 repo
+        if: ${{ matrix.distribution.name == 'rockylinux:9' }}
+        run: |
+          sed -i -e 's|^mirrorlist=|#mirrorlist=|' -e 's|^#baseurl=http://dl\.rockylinux\.org/|baseurl=https://dl.rockylinux.org/|' /etc/yum.repos.d/rocky-*.repo
+
       - name: Download packages
         uses: actions/download-artifact@v5
         id: download