Merge branch 'coverity' into 'master'

Fix coverity builds

See merge request OpenMW/openmw!4826

.gitlab-ci.yml

@@ -108,8 +108,8 @@ Coverity:
     - ccache/
   variables:
     CCACHE_SIZE: 2G
-    CC: clang-12
-    CXX: clang++-12
+    CC: clang
+    CXX: clang++
     CMAKE_BUILD_TYPE: Debug
     CMAKE_CXX_FLAGS_DEBUG: -O0
   before_script:

CI/install_debian_deps.sh

@@ -11,7 +11,7 @@ print_help() {
 declare -rA GROUPED_DEPS=(
   [gcc]="binutils gcc build-essential cmake ccache curl unzip git pkg-config mold"
   [clang]="binutils clang make cmake ccache curl unzip git pkg-config mold"
-  [coverity]="binutils clang-12 make cmake ccache curl unzip git pkg-config"
+  [coverity]="binutils clang make cmake ccache curl unzip git pkg-config file"
   [gcc_preprocess]="
     binutils
     build-essential