🐛 .data references in select() statements and missing library calls in generate_dr_ppt2()

[mcuadera]

There are two key issues addressed: 

• [x] The use of .data$ in tidyselect functions have been deprecated since tidyselect v1.2.0. Initially, references were made due to Notes generated during devtools::check() for unknown global variables. The preference is to wrap the column name in quotes for select() statements. However, .data$ has not been deprecated in mutate() statements. The solution is to remove any .data$ references within select statements.
• [x] An error arises when running generate_dr_ppt2() because some calls to fp_text() is not directly referencing the package officer. The solution is to replace these with officer::fp_text() instead.

[mcuadera]

• [x] Another error to address is with the generate_iss_barplot() function where .data$start_date and .data$end_date are referenced incorrectly