Check if every exercise is compatible with Catch2 v3

[vaeng]

Check every single exercise test run in the docker image:

Practice:

• [x] acronym
• [x] allergies
• [x] all-your-base
• [x] anagram
• [x] armstrong-numbers
• [x] atbash-cipher
• [x] bank-account
• [x] beer-song
• [x] binary
• [x] binary-search
• [x] binary-search-tree
• [x] bob
• [ ] circular-buffer
• [x] clock
• [x] collatz-conjecture
• [x] complex-numbers
• [x] crypto-square
• [x] darts
• [x] difference-of-squares
• [x] etl
• [x] food-chain
• [x] gigasecond
• [x] grade-school
• [x] grains
• [x] hamming
• [x] hello-world
• [x] hexadecimal
• [x] high-scores
• [x] isbn-verifier
• [x] isogram
• [x] largest-series-product
• [x] leap
• [x] luhn
• [x] matching-brackets
• [x] meetup
• [x] nth-prime
• [x] nucleotide-count
• [x] pangram
• [x] pascals-triangle
• [x] perfect-numbers
• [x] phone-number
• [x] prime-factors
• [x] protein-translation
• [x] queen-attack
• [x] raindrops
• [x] reverse-string
• [x] rna-transcription
• [x] robot-name
• [x] robot-simulator
• [x] roman-numerals
• [x] say
• [x] scrabble-score
• [x] secret-handshake
• [x] series
• [x] sieve
• [x] simple-linked-list
• [x] space-age
• [x] sum-of-multiples
• [x] triangle
• [x] trinary
• [x] two-fer
• [x] word-count

Concept

• [x] election-day
• [x] ellens-alien-game
• [x] freelancer-rates
• [x] interest-is-interesting
• [x] lasagna
• [x] last-will
• [x] log-levels
• [x] making-the-grade
• [x] pacman-rules
• [x] troll-the-trolls
• [x] vehicle-purchase

[vaeng]

Circular-buffer test file has a borked header:

Should be:

#include "circular_buffer.h"
#ifdef EXERCISM_TEST_SUITE
#include <catch2/catch.hpp>
#else
#include "test/catch.hpp"
#endif

Is:

#include "test/catch.hpp"
#include "circular_buffer.h"