* build: upgrade to golang 1.21.2 * build: verify checksums via tool * deps: upgrade go to 1.21.3 * build: move more build metadata into checksum file * build: move gobootsrc to checksums
* build: upgrade to golang 1.21.2 * build: verify checksums via tool * deps: upgrade go to 1.21.3 * build: move more build metadata into checksum file * build: move gobootsrc to checksums