ci: get fuel-core version from an env variable #17543

Job	Run time
build-sway-examples	4m 5s
build-reference-examples	3m 49s
build-sway-lib-core	3m 49s
build-sway-lib-std	3m 54s
forc-fmt-check-sway-examples	3m 41s
forc-fmt-check-sway-lib-core	3m 49s
forc-fmt-check-sway-lib-std	3m 47s
get-fuel-core-version	47s
build-forc-doc-sway-lib-std	6m 1s
build-mdbook	7m 32s
cargo-build-workspace	8m 33s
cargo-clippy	4m 34s
cargo-fmt-check	30s
build-forc-test-project	10m 19s
cargo-run-e2e-test-evm	8m 30s
cargo-run-e2e-test-midenvm	8m 14s
cargo-toml-fmt-check	29s
forc-fmt-check-panic	4m 25s
cargo-test-lib-std	3m 10s
cargo-unused-deps-check	9m 47s
forc-pkg-fuels-deps-check	16s
forc-run-benchmarks	5m 57s
forc-unit-tests	4m 26s
pre-publish-check	0s
cargo-test-workspace	23m 51s
cargo-run-e2e-test	18m 50s
notify-slack-on-failure	2s
publish	0s
build-publish-master-image	0s
build-publish-release-image	0s
Build and upload forc binaries to release	0s
	2h 33m 7s

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