chore: enable clang optimizations on Postgres (#584)

* chore: enable `-O2` optimizations on postgres

* chore: relocate `-O2` to cflags var

* Update common.vars.pkr.hcl

---------

Co-authored-by: Div Arora <[email protected]>
Co-authored-by: Div Arora <[email protected]>

Author: pcnc

ansible/tasks/setup-postgres.yml

@@ -60,7 +60,7 @@
 
 - name: Setting CFLAGS (arm)
   set_fact:
-    cflags: "-moutline-atomics -mtune=native -march=native -mcpu=native -fsigned-char"
+    cflags: "-moutline-atomics -mtune=native -march=native -mcpu=native -fsigned-char -O2"
   when: platform == "arm64"
 
 - name: Setting CFLAGS (x86)

common.vars.pkr.hcl

@@ -1 +1 @@
-postgres-version = "15.1.0.55"
+postgres-version = "15.1.0.56"