How do I format a TOC in bookdown using latex?

I am using bookdown with latex styling to make a report that contains headers, footers and section formatting. When i knit the report all pages have the correct formatting except the TOC.

MWE is below. There are no headers and the default section title formatting is not applied to the contents page.

index.Rmd

--- 
title: "A Quick Test"
author: "Jack Jill"
date: "`r Sys.Date()`"
site: bookdown::bookdown_site
documentclass: article
description: "This is a minimal example of a report."
papersize: a4
output:
bookdown::pdf_document2:
    includes:
        in_header: in_header.tex
        before_body: before_body.tex
    toc: true
geometry: top=20mm,bottom=60mm,footnotesep=10mm,left=24mm,right=30mm
---

\newpage

# **HEADING 1** 
## **Subheading**
Here is some text for the document. 

# **HEADING 2**
Here is some text for the document. 

# **HEADING 3** 
Here is some text for the document. 

in_header.tex

%Essential packages
\usepackage{graphicx, color}
\usepackage{multirow}
\usepackage[T1]{fontenc}
\usepackage{titlesec}
\usepackage{fancyhdr}
\usepackage{lastpage}
\usepackage{etoolbox}
\usepackage{tocloft}

\definecolor{airforceblue}{rgb}{0.36, 0.54, 0.66}
\definecolor{aliceblue}{rgb}{0.94, 0.97, 1.0}
\definecolor{amber}{rgb}{1.0, 0.75, 0.0}
\definecolor{amaranth}{rgb}{0.9, 0.17, 0.31}
\definecolor{amber}{rgb}{1.0, 0.75, 0.0}
\definecolor{black}{rgb}{0, 0, 0}


% This changes all section headings
\titleformat*{\section}{\bfseries\Large\itshape}
\titleformat*{\section}{\color{airforceblue}}

% Turn off default title page so I can make my own
\let\oldmaketitle\maketitle
\AtBeginDocument{\let\maketitle\relax}

before_body.tex

\pagestyle{fancy}
\fancyhead{}
\fancyhf{}

% Page layout
\parindent 0pt
\parskip 0pt

% Make custom page numbers
\cfoot{Page \thepage \hspace{1pt} of \pageref{LastPage}}

% Make a pretty header for every page
\fancyhead[L]{\includegraphics[width=3.5cm]{logo.png}}
\fancyhead[R]{\raisebox{1.6cm}{\color{amaranth}www.website.com.au}}

% Make the title page here
\setlength\headheight{68pt}
\vspace*{2.5cm} 
\fontsize{36pt}{42pt}\selectfont\bfseries\color{airforceblue}

MY REPORT TITLE 

\vspace*{0.5cm}  
\color{airforceblue}    
{\bfseries\huge{ SUBTITLE } }

\vspace*{1.0cm}  
\colorbox{amber}{\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\bfseries\huge\strut\textcolor{aliceblue}{ AUTHOR NAME } }}

% replace default title page with my new one
\let\maketitle\oldmaketitle

% end page
\clearpage

% Set default fonts for doc
\fontsize{10}{12}\selectfont
\fontfamily{qcr}\selectfont
\setlength{\headheight}{98pt}
\color{black}

% Manually adding TOC does not add header either
% \tableofcontents      
% \addcontentsline{toc}{section}{\contentsname}