Marketing account manager skills for your resume and career

Be a good communicator (internally and externally). Marketing is all about effective communication. Most of the roles in marketing are basically managing the various channels through which the communications are disseminated (Events, PR, Paid Search, Web, Social Media, etc.). If you can communicate effectively, you will be a strong asset to the team, and your skills will be easily transferable to multiple roles within the marketing organization. This will provide you security in your current role and a path for career advancement. Three things help to make you a more effective marketing communicator:
-Empathy - Have deep empathy for your prospective customer and the challenges that they are facing. Understand their industry, language, motivation, what their day is like, why they do what they do, who their customers are, etc.
-Product Knowledge - Have a deep understanding of the product or service that you are marketing. Understanding how the functionality of a product or a solution can solve a prospective customers pain point
-Macro Mindset - Think about how content layers together to create a hierarchy or matrix. Understanding how a content theme can be expanded or contracted can help you see the "big picture" and offer more granular detail on a particular topic.

Quantitative analytical skills, budget and finance skills, and performance assessment skills.

If a graduate needs to take a gap year, what skills would you recommend to enhance, and how should they go about doing it? - Again, I think this depends on your area of expertise; the industry is always evolving and growing, and you need to be evolving and growing with it. So if you're taking a gap year, try to stay involved or engaged in some way. Ideally, you'd be involved in the production and exercising your skills. Still, if that can't happen, you can stay engaged in other ways - help do props for your local community theatre or even volunteer as an usher. If nothing else, you should always be reading about what's happening in the field. Not just Broadway either - what plays and what work is being done in regional cities. Get your hands on and read the new plays coming out, watch the videos released (full productions, interviews, promotional and dramaturgical videos, too), and read the available reviews. Keep your head in the game, even if you're unable to work the way you want to be doing.

In our field, computer skills and proficiency with technology and data are in great demand (e.g., data analytics and engineering applications)

Technical skills are often industry and/or position specific. Applicants should highlight any technical skills related to the position advertisement and those that add value to the position/organization. Most importantly, requirements for technical skills change with time and technological advances. This means employers value workers capable of adapting to change and continually improving and acquiring new technical skills. Thus, it's usually more important to demonstrate you are capable of learning and developing technical skills than it is to have a specific skill set upon hire (although this is not true for some positions/industries).
That said, technical skills related to online presentations, virtual meetings, virtual networking, remote working and the like are hot commodities right now. While most organizations were in the process of adopting many of these technologies and ways of doing business pre-pandemic, the pandemic accelerated the process. Organizations are making it work, but they often don't know best practices or the most efficient means of working in the largely virtual, pandemic environment. Post-pandemic, many of the remote/virtual changes the pandemic brought will stay in some form. Technical skills that support this type of workplace will make applicants stand out to many employers because they need/want to do virtual/remote business better.