ci: switch to action-sh-checker v0.7.0

.github/workflows/lint.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: shfmt
-        uses: luizm/action-sh-checker@v0.6.0
+        uses: luizm/action-sh-checker@v0.7.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SHFMT_OPTS: -s # arguments to shfmt.

.shellcheckrc

@@ -32,3 +32,19 @@ disable=SC3013
 # https://github.com/koalaman/shellcheck/wiki/SC3045
 # ... but dash supports it
 disable=SC3045
+
+# SC2086: Double quote to prevent globbing and word splitting.
+# https://github.com/koalaman/shellcheck/wiki/SC2086
+disable=SC2086
+
+# SC2317: Command appears to be unreachable. Check usage (or ignore if invoked indirectly).
+# https://github.com/koalaman/shellcheck/wiki/SC2317
+disable=SC2317
+
+# SC2004: $/${} is unnecessary on arithmetic variables.
+# https://github.com/koalaman/shellcheck/wiki/SC2004
+disable=SC2004
+
+# SC2319: This $? refers to a condition, not a command. Assign to a variable to avoid it being overwritten.
+# https://github.com/koalaman/shellcheck/wiki/SC2319
+disable=SC2319