Workaround GitHub Action failure

Ubuntu 20.04 and 22.04 workflows are failing due to an error
which is hit when running `apt-get update`.  Until the
problematic package is fixed apply the suggested workaround
described here:

  https://github.com/orgs/community/discussions/47863

Reviewed-by: Matthew Ahrens <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Reviewed-by: Richard Yao <[email protected]>
Reviewed-by: Tino Reichardt <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #14530

Author: behlendorf

.github/workflows/checkstyle.yaml

@@ -13,8 +13,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/checkstyle-dependencies.txt apt-get install -qq
         sudo python3 -m pip install --quiet flake8

.github/workflows/zfs-tests-functional.yml

@@ -17,8 +17,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo apt-get clean
     - name: Autogen.sh

.github/workflows/zfs-tests-sanity.yml

@@ -13,8 +13,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo apt-get clean
     - name: Autogen.sh

.github/workflows/zloop.yml

@@ -15,8 +15,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo apt-get clean
     - name: Autogen.sh