workflows/rust: add gpg package to list of rpms to install

With the latest version of fedora, gpg seems to not be installed.
Add gpg to the list of rpms to be installed when testing.

Author: prestist

.github/workflows/rust.yml

@@ -52,7 +52,7 @@ jobs:
           # Specify additional fields not implied by the job name.
           key: ${{ matrix.arch }}
       - name: Install dependencies
-        run: dnf install -y gcc git-core libzstd-devel openssl-devel cpio diffutils jq xz
+        run: dnf install -y gcc git-core libzstd-devel openssl-devel cpio diffutils jq xz gpg
       - name: Configure cargo
         run: |
           # Avoid OOM on emulated s390x
@@ -109,7 +109,7 @@ jobs:
           # MSRV changes.
           key: ${{ matrix.arch }}-${{ env.MSRV }}
       - name: Install dependencies
-        run: dnf install -y gcc git-core libzstd-devel openssl-devel cpio diffutils jq xz
+        run: dnf install -y gcc git-core libzstd-devel openssl-devel cpio diffutils jq xz gpg
       - name: Configure cargo
         run: |
           # Avoid OOM on emulated s390x
@@ -204,7 +204,7 @@ jobs:
           # Specify additional fields not implied by the job name.
           key: ${{ matrix.arch }}-${{ matrix.channel }}
       - name: Install dependencies
-        run: dnf install -y gcc git-core libzstd-devel openssl-devel cpio diffutils jq xz
+        run: dnf install -y gcc git-core libzstd-devel openssl-devel cpio diffutils jq xz gpg
       - name: Configure cargo
         run: |
           # Avoid OOM on emulated s390x