Switch to unversioned clang in regression tests

.github/filters.yaml

@@ -3,6 +3,7 @@ shell:
   - .github/workflows/shellcheck.yaml
 sql:
   - 'sql/**'
+  - '.github/**'
 src:
   - 'cmake/**'
   - 'scripts/**'
@@ -11,3 +12,4 @@ src:
   - 'test/**'
   - 'tsl/**'
   - 'CMakeLists.txt'
+  - '.github/**'

.github/gh_matrix_builder.py

@@ -92,14 +92,14 @@ def build_debug_config(overrides):
         {
             "build_type": "Debug",
             "cc": "gcc",
-            "clang": "clang-14",
+            "clang": "clang",
             "coverage": True,
             "cxx": "g++",
-            "extra_packages": "clang-14 llvm-14 llvm-14-dev llvm-14-tools",
+            "extra_packages": "clang llvm llvm-dev",
             "ignored_tests": default_ignored_tests,
             "name": "Debug",
             "os": "ubuntu-22.04",
-            "pg_extra_args": "--enable-debug --enable-cassert --with-llvm LLVM_CONFIG=llvm-config-14",
+            "pg_extra_args": "--enable-debug --enable-cassert --with-llvm LLVM_CONFIG=llvm-config",
             "pg_extensions": "postgres_fdw test_decoding",
             "installcheck": True,
             "pginstallcheck": True,
@@ -240,8 +240,8 @@ def macos_config(overrides):
     build_without_telemetry(
         {
             "pg": PG18_LATEST,
-            "cc": "clang-14",
-            "cxx": "clang++-14",
+            "cc": "clang",
+            "cxx": "clang++",
             "tsdb_build_args": "-DLINTER=ON -DWARNINGS_AS_ERRORS=ON",
         }
     )