Update codecov badge url (#1283) #3004

Job	Run time
Native GCC (macos-latest)	3m 40s
Native GCC (ubuntu-latest)	2m 1s
GCC MicroBlaze Toolchain	3m 41s
CMake Example with Native GCC	14s
GNU MSP430 Toolchain	1m 37s
WIN32 MSVC	4m 42s
WIN32 MingW	4m 15s
GNU ARM Toolchain	2m 26s
	22m 36s

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