MAINT: Enable author_year formatting for references on all lectures

[mmcky]

We need to enable author_year on all lecture series for reference formatting

QuantEcon/lecture-python.myst#389

• lecture-jax/. MAINT: update bibtex to author_year style lecture-jax#180
• lecture-dle/ MAINT: anaconda, standard readme, bibtex lecture-dle#10
• lecture-python.myst/ ENH: update to author_year bibtex style lecture-python.myst#389
• lecture-dps/ MAINT: upgrade anaconda, default README and bibtex style lecture-dps#8
• lecture-stats/ MAINT: Update anaconda, README, and bibtex style lecture-stats#23
• lecture-dynamics/ MAINT: Update anaconda, README, status, and bibtex style lecture-dynamics#6
• lecture-python-advanced.myst/ MAINT: update bibtex to author-year lecture-python-advanced.myst#159
• lecture-tools-techniques/ MAINT: update bibtex to author-year lecture-tools-techniques#9
• lecture-python-intro/ MAINT: Upgrade anaconda and README lecture-python-intro#396
• lecture-eqm/ MAINT: upgrade anaconda, README, and status lecture-eqm#10
• lecture-python-programming.myst/. MAINT: update bibtex to author-year lecture-python-programming.myst#312

[mmcky]

Closing as all repos now have author_year bibtex reference style updates