fix(e2e): disable git commit signing in temp test repos

robot/e2e/common_e2e.resource

@@ -240,6 +240,8 @@ Create Temp Git Repo
     Should Be Equal As Integers    ${r2.rc}    0    msg=git config user.name failed
     ${r3}=    Run Process    git    config    user.email    e2e@test.local    cwd=${repo_dir}    timeout=60s    on_timeout=kill
     Should Be Equal As Integers    ${r3.rc}    0    msg=git config user.email failed
+    ${r3b}=    Run Process    git    config    commit.gpgsign    false    cwd=${repo_dir}    timeout=60s    on_timeout=kill
+    Should Be Equal As Integers    ${r3b.rc}    0    msg=git config commit.gpgsign failed
     # Create an initial commit so the repo has a HEAD
     Create File    ${repo_dir}${/}README.md    # Test Repository\n
     ${r4}=    Run Process    git    add    .    cwd=${repo_dir}    timeout=60s    on_timeout=kill

robot/e2e/m5_acceptance.robot

@@ -55,6 +55,8 @@ M5 Acceptance Suite Setup
     Should Be Equal As Integers    ${git_cfg_name.rc}    0    msg=git config user.name failed
     ${git_cfg_email}=    Run Process    git    config    user.email    e2e@test.local    cwd=${ws}    timeout=60s    on_timeout=kill
     Should Be Equal As Integers    ${git_cfg_email.rc}    0    msg=git config user.email failed
+    ${git_cfg_gpg}=    Run Process    git    config    commit.gpgsign    false    cwd=${ws}    timeout=60s    on_timeout=kill
+    Should Be Equal As Integers    ${git_cfg_gpg.rc}    0    msg=git config commit.gpgsign failed
     ${git_add}=    Run Process    git    add    .    cwd=${ws}    timeout=60s    on_timeout=kill
     Should Be Equal As Integers    ${git_add.rc}    0    msg=git add failed (rc=${git_add.rc}). Check DEBUG logs above.
     ${git_commit}=    Run Process    git    commit    -m    Initial commit    cwd=${ws}    timeout=60s    on_timeout=kill