[SPARK-33234][INFRA] Generates SHA-512 using shasum
[SPARK-33234][INFRA] Generates SHA-512 using shasum

### What changes were proposed in this pull request?

I am generating the SHA-512 using the standard shasum which also has a better output compared to GPG.

### Why are the changes needed?

Which makes the hash much easier to verify for users that don't have GPG.

Because an user having GPG can check the keys but an user without GPG will have a hard time validating the SHA-512 based on the 'pretty printed' format.

Apache Spark is the only project where I've seen this format. Most other Apache projects have a one-line hash file.

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

This patch assumes the build system has shasum (it should, but I can't test this).

Closes #30123 from emilianbold/master.

Authored-by: Emi <3cb2943f63f73c154586d01ea984676ef8463434@gmail.com>
Signed-off-by: Dongjoon Hyun <9b02cb7e37158797a8e22c559f7c5f5ecd28ea57@apple.com>

jiangxb1987/spark,HyukjinKwon/spark,zero323/spark,HyukjinKwon/spark,gengliangwang/spark,rednaxelafx/apache-spark,srowen/spark,zero323/spark,xuanyuanking/spark,chuckchen/spark,rednaxelafx/apache-spark,shaneknapp/spark,chuckchen/spark,zzcclp/spark,vinodkc/spark,dongjoon-hyun/spark,ueshin/apache-spark,witgo/spark,mahak/spark,hvanhovell/spark,shaneknapp/spark,BryanCutler/spark,wangmiao1981/spark,maropu/spark,BryanCutler/spark,rednaxelafx/apache-spark,zero323/spark,ueshin/apache-spark,maropu/spark,nchammas/spark,dongjoon-hyun/spark,hvanhovell/spark,wangmiao1981/spark,rednaxelafx/apache-spark,jiangxb1987/spark,apache/spark,mahak/spark,WeichenXu123/spark,milliman/spark,taroplus/spark,holdenk/spark,holdenk/spark,ueshin/apache-spark,JoshRosen/spark,ueshin/apache-spark,witgo/spark,nchammas/spark,BryanCutler/spark,apache/spark,JoshRosen/spark,vinodkc/spark,milliman/spark,nchammas/spark,BryanCutler/spark,milliman/spark,rednaxelafx/apache-spark,wangyum/spark,shuangshuangwang/spark,zero323/spark,HyukjinKwon/spark,milliman/spark,srowen/spark,wangyum/spark,shuangshuangwang/spark,vinodkc/spark,shaneknapp/spark,jiangxb1987/spark,taroplus/spark,vinodkc/spark,nchammas/spark,dongjoon-hyun/spark,srowen/spark,holdenk/spark,gengliangwang/spark,gengliangwang/spark,milliman/spark,xuanyuanking/spark,JoshRosen/spark,mahak/spark,apache/spark,shuangshuangwang/spark,wangmiao1981/spark,taroplus/spark,apache/spark,wangyum/spark,apache/spark,mahak/spark,rednaxelafx/apache-spark,xuanyuanking/spark,nchammas/spark,gengliangwang/spark,dongjoon-hyun/spark,nchammas/spark,chuckchen/spark,chuckchen/spark,holdenk/spark,zzcclp/spark,xuanyuanking/spark,HyukjinKwon/spark,jiangxb1987/spark,dongjoon-hyun/spark,wangyum/spark,WeichenXu123/spark,zero323/spark,hvanhovell/spark,HyukjinKwon/spark,rednaxelafx/apache-spark,chuckchen/spark,WeichenXu123/spark,JoshRosen/spark,wangmiao1981/spark,shaneknapp/spark,zzcclp/spark,hvanhovell/spark,WeichenXu123/spark,milliman/spark,wangmiao1981/spark,WeichenXu123/spark,milliman/spark,gengliangwang/spark,zero323/spark,ueshin/apache-spark,taroplus/spark,ueshin/apache-spark,BryanCutler/spark,zzcclp/spark,witgo/spark,BryanCutler/spark,cloud-fan/spark,dongjoon-hyun/spark,nchammas/spark,zzcclp/spark,maropu/spark,shaneknapp/spark,wangyum/spark,shuangshuangwang/spark,taroplus/spark,witgo/spark,shuangshuangwang/spark,maropu/spark,mahak/spark,witgo/spark,shaneknapp/spark,xuanyuanking/spark,srowen/spark,JoshRosen/spark,zzcclp/spark,zzcclp/spark,jiangxb1987/spark,HyukjinKwon/spark,hvanhovell/spark,mahak/spark,wangmiao1981/spark,hvanhovell/spark,gengliangwang/spark,xuanyuanking/spark,vinodkc/spark,cloud-fan/spark,gengliangwang/spark,cloud-fan/spark,shuangshuangwang/spark,cloud-fan/spark,srowen/spark,BryanCutler/spark,holdenk/spark,witgo/spark,jiangxb1987/spark,holdenk/spark,srowen/spark,ueshin/apache-spark,srowen/spark,vinodkc/spark,apache/spark,taroplus/spark,HyukjinKwon/spark,witgo/spark,WeichenXu123/spark,wangyum/spark,shuangshuangwang/spark,JoshRosen/spark,hvanhovell/spark,maropu/spark,taroplus/spark,zero323/spark,holdenk/spark,chuckchen/spark,cloud-fan/spark,JoshRosen/spark,vinodkc/spark,jiangxb1987/spark,cloud-fan/spark,dongjoon-hyun/spark,WeichenXu123/spark,cloud-fan/spark,chuckchen/spark,wangyum/spark,maropu/spark,xuanyuanking/spark,apache/spark,wangmiao1981/spark,maropu/spark,mahak/spark,shaneknapp/spark