fix: Fix failing TPC-DS workflow in PR CI runs

[andygrove]

Which issue does this PR close?

Closes #2206

Rationale for this change

Fix broken CI

What changes are included in this PR?

Downgrade from gcc 14 to gcc 12 so that tpcds-kit can compile

How are these changes tested?

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.56%. Comparing base (f09f8af) to head (47ae97e).
⚠️ Report is 399 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2207      +/-   ##
============================================
+ Coverage     56.12%   58.56%   +2.43%     
- Complexity      976     1281     +305     
============================================
  Files           119      143      +24     
  Lines         11743    13213    +1470     
  Branches       2251     2361     +110     
============================================
+ Hits           6591     7738    +1147     
- Misses         4012     4249     +237     
- Partials       1140     1226      +86     

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