Update SAST Config UI strings

Addresses https://gitlab.com/gitlab-org/gitlab/-/issues/233910.

ee/app/assets/javascripts/security_configuration/sast/components/app.vue

@@ -56,16 +56,13 @@ export default {
   i18n: {
     helpText: s__(
       `SecurityConfiguration|Customize common SAST settings to suit your
-      requirements. More advanced configuration options exist, which you can
-      add to the configuration file this tool generates. It's important to note
-      that if you make any configurations, they will be saved as overrides and
-      will be excluded from automatic updates. We've provided guidance for some
-      easily configurable variables below, but our docs go into even more
-      depth. %{linkStart}Read more%{linkEnd}`,
+      requirements. Configuration changes made here override those provided by
+      GitLab and are excluded from updates. For details of more advanced
+      configuration options, see the %{linkStart}GitLab SAST documentation%{linkEnd}.`,
     ),
     loadingErrorText: s__(
-      `SecurityConfiguration|There was an error loading the configuration.
-      Please reload the page to try again.`,
+      `SecurityConfiguration|Could not retrieve configuration data. Please
+      refresh the page, or try again later.`,
     ),
   },
 };

locale/gitlab.pot

@@ -21294,7 +21294,10 @@ msgstr ""
 msgid "SecurityConfiguration|Configure"
 msgstr ""
 
-msgid "SecurityConfiguration|Customize common SAST settings to suit your requirements. More advanced configuration options exist, which you can add to the configuration file this tool generates. It's important to note that if you make any configurations, they will be saved as overrides and will be excluded from automatic updates. We've provided guidance for some easily configurable variables below, but our docs go into even more depth. %{linkStart}Read more%{linkEnd}"
+msgid "SecurityConfiguration|Could not retrieve configuration data. Please refresh the page, or try again later."
+msgstr ""
+
+msgid "SecurityConfiguration|Customize common SAST settings to suit your requirements. Configuration changes made here override those provided by GitLab and are excluded from updates. For details of more advanced configuration options, see the %{linkStart}GitLab SAST documentation%{linkEnd}."
 msgstr ""
 
 msgid "SecurityConfiguration|Enable via Merge Request"
@@ -21330,9 +21333,6 @@ msgstr ""
 msgid "SecurityConfiguration|Testing & Compliance"
 msgstr ""
 
-msgid "SecurityConfiguration|There was an error loading the configuration. Please reload the page to try again."
-msgstr ""
-
 msgid "SecurityConfiguration|Using custom settings. You won't receive automatic updates on this variable. %{anchorStart}Restore to default%{anchorEnd}"
 msgstr ""