Update Intel compiler installation

.github/workflows/dependencies/dependencies_dpcpp.sh

@@ -14,13 +14,18 @@ echo 'Acquire::Retries "3";' | sudo tee /etc/apt/apt.conf.d/80-retries
 
 # Ref.: https://github.com/rscohn2/oneapi-ci
 # intel-basekit intel-hpckit are too large in size
-wget -q -O - https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB \
- | sudo apt-key add -
-echo "deb https://apt.repos.intel.com/oneapi all main" \
- | sudo tee /etc/apt/sources.list.d/oneAPI.list
+
+# download the key to system keyring
+wget -O- https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB \
+| gpg --dearmor | sudo tee /usr/share/keyrings/oneapi-archive-keyring.gpg > /dev/null
+
+# add signed entry to apt sources and configure the APT client to use Intel repository:
+echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https://apt.repos.intel.com/oneapi all main" | sudo tee /etc/apt/sources.list.d/oneAPI.list
 
 sudo apt-get update
 
+sudo aptitude search '?provides(^intel$)'
+
 # try apt install up to five times, to avoid connection splits
 status=1
 for itry in {1..5}