Do not run Valgrind tests in PR jobs

Co-authored-by: Dave Rodgman <dave.rodgman@arm.com>
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>

tests/scripts/all.sh

@@ -1629,7 +1629,7 @@ component_test_memsan_constant_flow () {
  make test
 }
 
-component_test_valgrind_constant_flow () {
+component_release_test_valgrind_constant_flow () {
  # This tests both (1) everything that valgrind's memcheck usually checks
  # (heap buffer overflows, use of uninitialized memory, use-after-free,
  # etc.) and (2) branches or memory access depending on secret values,
@@ -3371,7 +3371,7 @@ component_test_memsan () {
  fi
 }
 
-component_test_valgrind () {
+component_release_test_valgrind () {
  msg "build: Release (clang)"
  # default config, in particular without MBEDTLS_USE_PSA_CRYPTO
  CC=clang cmake -D CMAKE_BUILD_TYPE:String=Release .
@@ -3399,7 +3399,7 @@ component_test_valgrind () {
  fi
 }
 
-component_test_valgrind_psa () {
+component_release_test_valgrind_psa () {
  msg "build: Release, full (clang)"
  # full config, in particular with MBEDTLS_USE_PSA_CRYPTO
  scripts/config.py full