Add --no-show-signature to "git show" commands (facebook#23038)

* Add --no-show-signature to "git show" commands.

This fixes errors if the user has configured the following in their ~/.gitconfig:
[log]
showSignature = true

* yarn prettier-all

packages/react-devtools-extensions/utils.js

@@ -20,7 +20,7 @@ const GITHUB_URL = 'https://github.com/facebook/react';
 
 function getGitCommit() {
   try {
-    return execSync('git show -s --format=%h')
+    return execSync('git show -s --no-show-signature --format=%h')
       .toString()
       .trim();
   } catch (error) {

scripts/release/utils.js

@@ -72,7 +72,9 @@ const getBuildInfo = async () => {
   const branch = await execRead('git branch | grep \\* | cut -d " " -f2', {
     cwd,
   });
-  const commit = await execRead('git show -s --format=%h', {cwd});
+  const commit = await execRead('git show -s --no-show-signature --format=%h', {
+    cwd,
+  });
   const checksum = await getChecksumForCurrentRevision(cwd);
   const dateString = await getDateStringForCommit(commit);
   const version = isExperimental
@@ -106,7 +108,7 @@ const getChecksumForCurrentRevision = async cwd => {
 
 const getDateStringForCommit = async commit => {
   let dateString = await execRead(
-    `git show -s --format=%cd --date=format:%Y%m%d ${commit}`
+    `git show -s --no-show-signature --format=%cd --date=format:%Y%m%d ${commit}`
   );
 
   // On CI environment, this string is wrapped with quotes '...'s

scripts/rollup/build-all-release-channels.js

@@ -19,12 +19,18 @@ const {
 // by configuring an environment variable.
 
 const sha = String(
-  spawnSync('git', ['show', '-s', '--format=%h']).stdout
+  spawnSync('git', ['show', '-s', '--no-show-signature', '--format=%h']).stdout
 ).trim();
 
 let dateString = String(
-  spawnSync('git', ['show', '-s', '--format=%cd', '--date=format:%Y%m%d', sha])
-    .stdout
+  spawnSync('git', [
+    'show',
+    '-s',
+    '--no-show-signature',
+    '--format=%cd',
+    '--date=format:%Y%m%d',
+    sha,
+  ]).stdout
 ).trim();
 
 // On CI environment, this string is wrapped with quotes '...'s