GitHub workflows: install libmount-dev on Ubuntu

Without it, the workflows will fail.

Signed-off-by: Martin Wilck <mwilck@suse.com>

Author: mwilck

.github/workflows/abi-stable.yaml

@@ -38,6 +38,7 @@ jobs:
           gcc make pkg-config abigail-tools
           libdevmapper-dev libreadline-dev libaio-dev libsystemd-dev
           libudev-dev libjson-c-dev liburcu-dev libcmocka-dev libedit-dev
+          libmount-dev
       - name: checkout ${{ env.PARENT_TAG }}
         uses: actions/checkout@v4
         with:
@@ -86,6 +87,7 @@ jobs:
           gcc make pkg-config abigail-tools
           libdevmapper-dev libreadline-dev libaio-dev libsystemd-dev
           libudev-dev libjson-c-dev liburcu-dev libcmocka-dev libedit-dev
+          libmount-dev
       - name: check ABI of ${{ github.ref }} against ${{ env.PARENT_TAG }}
         id: check_abi
         run: make -j$(nproc) -Orecurse abi-test

.github/workflows/coverity.yaml

@@ -16,6 +16,7 @@ jobs:
           gcc make pkg-config
           libdevmapper-dev libreadline-dev libaio-dev libsystemd-dev
           libudev-dev libjson-c-dev liburcu-dev libcmocka-dev libedit-dev
+          libmount-dev
       - name: download coverity
         run: >
           curl -o cov-analysis-linux64.tar.gz