Build with default GCC

This change updates the build pipeline to build the kernel with the
default GCC version on Debian Buster. This is more safe for people
running custom kernel modules.

.github/workflows/build-trusted.yml

@@ -22,7 +22,7 @@ jobs:
         rm -rf *.deb *.ddeb *.build *.buildinfo *.changes
         cd pve-edge-kernel
         debian/rules debian/control
-        debuild -e CC=gcc-10 -e CCACHE_DIR=/var/cache/ccache --prepend-path=/usr/lib/ccache --jobs=auto -b -uc -us
+        debuild -e CCACHE_DIR=/var/cache/ccache --prepend-path=/usr/lib/ccache --jobs=auto -b -uc -us
     - name: Upload Artifacts
       uses: actions/upload-artifact@v2-preview
       with:

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
       matrix:
         include:
           - build_profile: 'generic'
-            build_cc: gcc-10
+            build_cc: gcc
             build_cflags: ''
     steps:
     - name: Clean Workspace